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:: Abstract List ::

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271 Physics Education ABS-161

Identification of Deterministic, Intermediate, and Probabilistic Thinking in Terms of Gender, Cumulative Grade Point Average, and Mathematical Ability
A.Halim- Ibnu K- Evendi

Universitas Syiah Kuala, Aceh


Abstract

The transition from classical physics to quantum physics is not merely a shift in content, but also involves a transformation in students^ conceptual understanding and modes of thinking-from deterministic to probabilistic thinking. One of the causes of misconceptions in quantum physics concepts is that students tend to retain deterministic ways of thinking. This study focuses on identifying the types of thinking adopted by students during quantum physics lectures, specifically regarding the concept of wave-particle duality of light. A total of 221 students enrolled in quantum physics courses participated in this study. Based on the data collected through a multiple-choice test instrument on the concept of wave-particle duality, it was found that most students demonstrated intermediate thinking, while only a small portion continued to rely on deterministic thinking

Keywords: quantum, classical, deterministic, probabilistic, intermediatic

Share Link | Plain Format | Corresponding Author (A Halim)


272 Physics Education ABS-174

The Effect of STEAM-Integrated PBL-C Model with Formative Assessment on Increasing N-Gain of Students^ Scientific Literacy Skills on Statics Fluid Topic
Ni Kadek Savita Radharani (a), Parno (a*), Purbo Suwasono (a), Nina Diana Nawi (b)

a) Departement of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia
(b)University Teknologi Malaysia, Malaysia
*parno.fmipa[at]um.ac.id
b) ninadiana[at]utm.my


Abstract

The application of the STEAM-integrated PBL-C model with Formative Assessment to increase students^ scientific literacy skills is still rare. This research investigates the effect of the PBL-C STEAM FA model on scientific literacy skills in static fluids topic. This quasi-experimental study uses a Non-equivalent Pretest-Posttest Control Group design. The subjects of this study are 11th-grade students at State Senior High School 1 Singosari, Indonesia, consisting of an experimental class and a control class. A scientific literacy test instrument with a Cronbach^s Alpha reliability of 0.741 was used in this study. Data were analyzed using the Mann-Whitney test, N-gain, and Cohen^s d-effect size. The results showed that the PBL-C STEAM FA model significantly increase students^ scientific literacy N-Gain compared to the conventional model. This result is supported by the increase in scientific literacy of the experimental class in the High category, which is two levels higher than the control class in the Low category, both in the overall topic, subtopics, and indicators of scientific literacy. The highest increase in scientific literacy in the experimental class occurred in the subtopic of Archimedes^ law and the indicators of evaluating and designing scientific investigations, as students designed and created miniature ship products and conducted experiments. This research has operational effects in the field with a d-effect size in the Large category. It is recommended for future research that the application of the PBL-C STEAM FA model is complemented with a scientific literacy test instrument that can represent each indicator in each subtopic.

Keywords: scientific literacy, static fluid, PBL-C, STEAM, formative assessment

Share Link | Plain Format | Corresponding Author (Ni Kadek Savita Radharani)


273 Physics Education ABS-177

A Brief Literature Review of Common Misconceptions in Physics Learning
Della Astri Widayani (a), Elvin Yusliana Ekawati (a), Yulianto Agung Rezeki (a*)

a) Master Program of Physics Education, Faculty of Teacher Training and Education, Universitas Sebelas Maret, Surakarta 57126, Indonesia
*yarezeki[at]staff.uns.ac.id


Abstract

Students and educators commonly experience misconceptions about physics, which are documented periodically. These misconceptions may arise based on epistemological, didactical, or social constructs. However, if these misconceptions are not identified and corrected, scientific understanding and logical thinking skills will be hindered. Furthermore, if those misconceptions continue to be repeated from generation to generation, there will be a systematic science gap in education. This study aims to explore research patterns on misconceptions in physics learning, including trends in misconceptions categorized in physics topics, types of instruments used to identify misconceptions, potential teaching strategies, and digital innovations applied in the process of identifying and correcting misconceptions. The method used in this article is systematic literature review (SLR) with the PRISMA 2020 protocol. Data were collected from articles published from 2014 to 2024 using the Scopus database. The results showed that introductory mechanics was the most dominant in identifying misconceptions. Both test and non-test instruments were used to identify misconceptions. The test instrument began using a two-tier diagnostic test, then developed into a four-tier test since 2018, and there is a five-tier test in 2020. In addition, non-test instruments in the form of interviews and questionnaires. Potential teaching strategies include using philosophical, constructivist, analogy and conflict-based approaches. Digital innovation utilization has shown a significant increase in the last five years for both identification and correction of misconceptions. These results are expected to provide valuable references for educators in developing learning strategies, guide curriculum evaluation for curriculum developer, and spark new innovations in solving misconception problems for researchers.

Keywords: Misconceptions, Physics learning, Systematic literature review

Share Link | Plain Format | Corresponding Author (Della Astri Widayani)


274 Physics Education ABS-180

Enhancing Vocational High School Students^ Higher Order Thinking Skills through E-Module of Bar Force Analysis in Simple Frame Constructions
Riyan Arthur (a*), Ahmad (b), Sugeng Priyanto (c), Amelia Vinayastri (d), Salma Maharani (a), Firros Hirzy (e), Rachel Eva Maria Enjelika (f)

a) Penelitian dan Evaluasi Pendidikan, Sekolah Pascasarjana, Universitas Negeri Jakarta
*arthur[at]unj.ac.id
b) Pendidikan Luar Sekolah, Fakultas Ilmu Pendidikan, Universitas Negeri Malang
c) Teknik Mesin, Fakultas Teknik, Universitas Negeri Jakarta
d) Penelitian dan Evaluasi Pendidikan, Sekolah Pascasarjana, Universitas Muhammadiyah Prof Dr Hamka
e) Teknologi Pendidikan, Fakultas Ilmu Pendidikan, Universitas Negeri Jakarta
f) Pendidikan Teknik Bangunan, Fakultas Teknik, Universitas Negeri Jakarta


Abstract

The advancement of the Industrial Era 5.0 necessitates that vocational education integrate technology into the learning process in ways that align with the demands of the workforce. This requirement implies that vocational students must not only possess practical skills but also demonstrate higher order thinking skills (HOTS), which should be supported by strong literacy competencies. These skills are essential for solving technical problems in a logical and analytical manner. One notable issue arises within the Expertise Competency of Building Modeling and Information Design, where students exhibit low HOTS performance in the subject of Engineering Mechanics. This is particularly evident in topics involving bar forces in simple frame constructions, which require a solid understanding of physics and engineering concepts derived from mathematics and science. This study aims to examine the effectiveness of vocational literacy based e modules in enhancing students HOTS in the aforementioned competency area. A quasi experimental research design was employed, involving two groups an experimental group using the e-module and a control group utilizing presentation-based media. Data were analyzed using ANCOVA to control for students initial ability levels. The results indicate a statistically significant difference between the two groups (Fhitung = 8.463 > Ftabel = 3.99- p = 0.005), with the experimental group achieving higher average HOTS scores. The e module has proven effective in strengthening vocational literacy, as it contextualizes material within civil engineering practices and demonstrates potential for sustainable implementation as an interactive, project based instructional resource.

Keywords: Literacy Vocational, E Module, High Order Thinking Skill

Share Link | Plain Format | Corresponding Author (Firros Hirzy)


275 Physics Education ABS-187

Bridging the Gap in Physics Education: A Study on Higher-Order Thinking Skills Among High School Students
Rafika Elmutiah (a*), Zulirfan (a), M. Rahmad (a)

a) Faculty of Teacher Training and Education, Riau University, Kampus Binawidya Jl. HR. Subrantas km. 12,5, Pekanbaru 28293, Indonesia


Abstract

Higher Order Thinking Skills (HOTS) play a crucial role in physics education. However, international assessments such as PISA and TIMSS indicate that Indonesian students still struggle to develop these skills. Interviews with high school teachers in Duri, Riau, reveal that physics instruction in schools primarily focuses on low-level problems, leaving students untrained in solving analytical and evaluative challenges. This study aims to analyze the level of higher-order thinking skills among high school students in the concept of rotational dynamics using questionnaires and cognitive tests. The results show that students^ higher-order thinking skills remain low, particularly in linking concepts and applying understanding in problem-solving contexts. In conclusion, more effective teaching strategies are needed to enhance these skills, such as implementing problem-based learning and inquiry-based approaches to create deeper and more meaningful learning experiences.

Keywords: High order thinking skills (HOTS)- Learning Motivation- Physics Learning

Share Link | Plain Format | Corresponding Author (Rafika Elmutiah)


276 Physics Education ABS-202

RANCANG BANGUN ALAT PERAGA MOMENTUM SUDUT GYROSKOP RODA
Emza Sinar Pamungkas, Hadi Nasbey, Upik Rahma Fitri

Program Studi Pendidikan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Jakarta, Jl. Rawamangun muka Raya No. 11, Jakarta 13220, Indonesia.


Abstract

Penelitian ini merancang dan membangun alat peraga gyroskop roda untuk memvisualisasikan konsep momentum sudut pada pembelajaran fisika SMA. Metode Research and Development (R&D) digunakan dengan model 4D (Define, Design, Develop), dibatasi hingga tahap Develop. Pada tahap Define, dilakukan studi literatur, observasi lapangan, dan wawancara guru-siswa untuk mengidentifikasi kebutuhan media konkret. Hasil analisis menunjukkan bahwa konsep momentum sudut sulit dipahami tanpa visualisasi konkret, dan keterbatasan media untuk menunjang minat dalam pemahaman pembelajaran fisika karena belum tersedianya di tingkat sekolah menengah. Tahap Design meliputi pembuatan sketsa prototipe, pemilihan material, dan alur rancangan tiap komponen. Tahap Develop mencakup fabrikasi komponen, perakitan prototipe akhir, dan penyusunan buku panduan pengguna. Alat peraga ini sederhana, interaktif, dan dirancang untuk memperkuat pemahaman konsep momen inersia, kecepatan sudut, dan hukum kekekalan momentum sudut melalui pengalaman langsung. Diharapkan menjadi alternatif media pembelajaran yang aplikatif dan mudah digunakan dalam pembelajaran fisika.

Keywords: alat peraga- momentum sudut- gyroskop roda- fisika- model 4D- R&D

Share Link | Plain Format | Corresponding Author (Emza Sinar Pamungkas)


277 Physics Education ABS-213

Exploring Students^ Experience Through Gravitational Acceleration Experiments
I E Santosa

Department of Physics Education, Sanata Dharma University, Paingan, Maguwohardjo, Sleman, Yogyakarta


Abstract

This study examines students^ engagement with experimental procedures beyond routine measurements. Using three computer-based experiments-a simple pendulum, a picket fence, and a free-falling object-students determined the acceleration due to gravity. Results indicate that varying experimental complexity fosters deeper understanding of experimental physics.

Keywords: acceleration of gravity, pendulum, picket fence, video

Share Link | Plain Format | Corresponding Author (Ignatius Edi Santosa)


278 Physics Education ABS-223

The Using of Interactive Electronic Modules to Improve Students^ Digital Literacy
Susilawati Susilawati 1*, Fina Indria1, Evendi Evendi1, Ahmad Farhan1 and Ngadimin1

Department of Physics Education, Syiah Kuala University, Aceh, Indonesia


Abstract

The low level of digital literacy among Indonesian students remains a challenge in utilizing technology effectively, particularly in physics education. This issue is influenced by inadequate digital skills, limited integration of digital literacy into teaching practices, and the use of less interactive learning media. This study aims to analyze the impact of using interactive electronic modules supported by the Edukati Learning Management System (LMS) on improving students^ digital literacy. A pre-experimental method with a one-group pretest-posttest design was employed, involving 34 purposively selected senior high school students. Digital literacy was assessed using pretest and posttest scores based on five indicators: information, communication, content creation, safety, and problem-solving. The results indicated a significant improvement in students^ digital literacy, with an average N-Gain score of 0.71, which is categorized as high. Among the five indicators, the information component showed the highest increase, highlighting the module^s effectiveness in enhancing students^ ability to access and evaluate digital information. These findings suggest that the LMS-supported interactive modules are effective in increasing students^ digital literacy and creating a more engaging learning experience that encourages active student participation and deeper conceptual understanding.

Keywords: Please Just Try to Submit This Sample Abstract

Share Link | Plain Format | Corresponding Author (Susilawati Susilawati Susilawati)


279 Physics Education ABS-224

Ethnophysics through Marble Games: A Learning Trajectory Design to Reduce Kinematics Misconceptions
Afridha Sesrita(1*), I Made Astra(2), Edwita(3)

1)Departement of Basic Education, Postgraduate, Universitas Negeri Jakarta, Jakarta, Indonesia
*afridha.sesrita[at]mhs.unj.ac.id
2)Department of Physics Education, Universitas Negeri Jakarta, Jakarta, Indonesia
3)Department of Elementary School Teacher Education, Universitas Negeri Jakarta, Jakarta, Indonesia


Abstract

Kinematics has consistently been identified as a challenging area in physics education due to its abstract nature and students^ reliance on everyday reasoning. Despite formal instruction, misconceptions about motion, velocity, and acceleration persist among primary teacher education students. Previous studies on concept remediation have often neglected cultural relevance, creating a gap in meaningful learning approaches. This study aimed to identify misconceptions among primary teacher education students and design a culturally responsive learning trajectory using the ethnophysics approach through traditional marble games. The research followed a design research methodology in the preliminary phase, involving a literature review, diagnostic assessment using selected items from the Force Concept Inventory, and development of a hypothetical learning trajectory (HLT). Fifty first-semester students from diverse academic backgrounds participated in the diagnostic test. The results revealed widespread misconceptions across six kinematic concepts, with correct responses falling below 30%. These findings informed the design of an HLT that leveraged marble games to contextualize kinematic principles such as distance, displacement, speed, and acceleration. The approach enabled students to relate abstract concepts to tangible experiences, fostering conceptual change. The study concluded that integrating ethnophysics with traditional games presents a promising strategy to reduce misconceptions and enhance physics understanding in culturally meaningful ways.

Keywords: Ethnophysics- Kinematics- Misconceptions- Marble games- Learning trajectory- Physics education

Share Link | Plain Format | Corresponding Author (Afridha Sesrita)


280 Physics Education ABS-230

Effectiveness of Integrating Flipped Classroom with Deep Learning Approach on Students^ Digital Literacy in Thermodynamics
Maria Paristiowati (a*), Rika Siti Syaadah (b*), Ade Amalia (c) Nurul Fitriana (d)

a,b,c,d Chemistry Education Department, Faculty of Mathematics and Natural Science, Universitas Negeri Jakarta, Jakarta, Indonesia, 13220

maria.paristiowati[at]unj.ac.id rikasitisyaadah[at]unj.ac.id


Abstract

One of the central challenges in 21st-century education is not only ensuring students master academic content but also equipping them with essential skills such as digital literacy. This study investigates the implementation of a deep learning approach combined with a flipped classroom model to enhance students^ digital literacy in thermodynamics material. Deep learning approach encourages a deeper understanding of scientific concepts and cultivates critical thinking skills, while the flipped classroom model enables self-directed learning through technology, reserving in class time for higher order learning activities. A descriptive quantitative methodology was employed, utilizing a validated digital literacy assessment and observation sheets for student learning activities. The study was conducted at SMAN 35 Jakarta with 50 eleventh grade students as participants. Results demonstrated that integrating the flipped classroom model with a deep learning approach significantly improved students^ digital literacy, with an observed enhancement more than 50% of each dimension of digital literacy. These findings highlight the effectiveness of innovative, technology enhanced instructional strategies in advancing digital literacy within thermodynamics learning.

Keywords: digital literacy, deep learning, thermodynamics, Flipped Clasroom, 21st century skills

Share Link | Plain Format | Corresponding Author (Rika Syaadah)


281 Physics Education ABS-231

Development of an Interactive Learning Website Using a Deep Learning Approach on Thermodynamics Material
Rika Siti Syaadah1*, Maria Paristiowati2, Tiwi Nur Astuti3, Sarina Hanifah4 Diva Salsabila5, Ferly Saskia Agustin6 Annisa Rahma Alia7 Cindy Clara Florencia Br Sirait8 & Saskia Wahdani Hamami9

a,b,c,d,e,f, g,h, i Chemistry Education Department, Faculty of Mathematics and Natural Science, Universitas Negeri Jakarta, Jakarta, Indonesia, 13220

rikasitisyaadah[at]unj.ac.id


Abstract

The integration of information technology into education has revolutionized instructional delivery, enabling more interactive, contextualized, and meaningful learning experiences. This study aims to design and develop an interactive web-based learning platform that incorporates a deep learning approach to support the teaching of thermodynamics. The deep learning framework emphasizes fostering deep conceptual understanding, critical thinking, and the application of knowledge to real-world contexts. Employing a Research and Development (R&D) methodology with the ADDIE model, the study proceeded through the stages of analysis, design, development, implementation, and evaluation. Data were collected using validated instruments, including student needs analysis questionnaires, interview protocols, and user response questionnaires, reviewed by subject matter and media experts. The research was conducted at Public Senior High School 44 Jakarta with 36 senior high school students. Findings demonstrate that the developed interactive website effectively enhances the quality of science learning by integrating deep learning principles. This research contributes to the advancement of technology-enhanced learning media, aligning educational practices with 21st-century demands.

Keywords: interactive learning, website, deep learning, thermodynamics, senior high school

Share Link | Plain Format | Corresponding Author (Rika Syaadah)


282 Theory, Nuclear, and Particle Physics ABS-5

M1 Radiative Transition of Light Mesons in the Light-Front Quark Model
Muhammad Ridwan(a*), Ahmad Jafar Arifi(b)(c), Terry Mart(a)

a) Department of Physics, Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Indonesia, Depok 16424, Indonesia
*muhammad.ridwan75[at]sci.ui.ac.id
b) Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan
c) Research Center for Nuclear Physics, The University of Osaka, Ibaraki, Osaka 567-0047, Japan


Abstract

We investigate the M1 radiative transitions between light vector and pseudoscalar mesons in the light-front quark model. To this end, we use the light-front wave functions (LFWFs) obtained from our previous work based on the QCD-motivated effective Hamiltonian that includes smeared spin-spin interactions, where a few harmonic oscillator basis functions were employed as trial wave functions. Our analysis adopts good and transverse current components with both longitudinal and transverse polarizations. The results, including their couplings, widths, and branchings, obtained from LFWFs with different trial wave functions are compared with experimental data and other theoretical predictions.

Keywords: M1 radiative transition, LFQM, light vector and pseudoscalar mesons, LFWFs, currents, polarizations

Share Link | Plain Format | Corresponding Author (Muhammad Ridwan)


283 Theory, Nuclear, and Particle Physics ABS-10

Charger-based quantum battery with periodically driven-dissipative
Fingken Stevanus Sagai (a*), M Ikhsan Arif (a), Freddy Permana Zen (a), Jusak Sali Kosasih (a), Donny Dwiputra (b,c)

a) Theoretical Physics Laboratory, Faculty of Mathematic and Natural Science, Bandung Institute of Technology, Jl. Ganesha 10, Bandung 40132, Indonesia
*sfingken[at]gmail.com
b) Research Center for Quantum Physics, National Research and Innovation Agency (BRIN), South Tangerang 15314, Indonesia
c) Asia Pacific Center for Theoretical Physics, Pohang 37673, Korea


Abstract

Quantum batteries are designed to outperform classical batteries by utilizing quantum effects, particularly in charging speed and energy storage efficiency. Quantum batteries based on chargers that interact periodically with an external energy source are observed within an open quantum system framework, with battery performance parameters such as charging time and total energy used for evaluation. In this paper, the charger and quantum battery are modeled as a quantum harmonic oscillator, and their interaction is governed by the Lindblad master equation. The energy function of the quantum battery is determined by the first momenta obtained by solving a system of coupled first-order linear differential equations formed from the master equation. Based on these results, we investigate the effect of periodic driving on energy charging, energy stability, and decoherence effects in the quantum battery.

Keywords: Periodic driving- Quantum energy- Quantum battery- Open quantum system.

Share Link | Plain Format | Corresponding Author (Fingken Stevanus Sagai)


284 Theory, Nuclear, and Particle Physics ABS-11

New Isobar Models for \(K^+\Lambda\) Electroproduction
Jovan Alfian Djaja (a*), Terry Mart (a)

(a) Departemen Fisika, FMIPA, Universitas Indonesia, Depok 16424, Indonesia

*jovan.alfian[at]ui.ac.id


Abstract

The electroproduction of kaons on protons has been studied using two covariant isobar models. These models incorporate propagators and vertex factors from our previous work. In total, the current study includes 26 nucleon resonances and 20 hyperon resonances, with spins up to 13/2. Instead of the commonly used dipole model, we adopt two alternative approaches for the electromagnetic form factors. The unknown parameters in the models, such as coupling constants and form factor cutoffs, are determined by fitting to nearly 2000 experimental data points. The resulting models show good agreement with the available experimental data.

Keywords: Kaon Electroproduction, Electromagnetic Form Factor, Nucleon Resonances, Hyperon Resonances

Share Link | Plain Format | Corresponding Author (Jovan Alfian Djaja)


285 Theory, Nuclear, and Particle Physics ABS-12

Witnessing the destruction of regular black hole
M. Fahmi Fauzi, Handhika S. Ramadhan, and Anto Sulaksono

Departemen Fisika, FMIPA, Universitas Indonesia, Depok 16424, Indonesia


Abstract

One proposed method to probe the existence of regular black holes is by overspinning them beyond their critical spin, as they are not constrained by the weak cosmic censorship conjecture. Several mechanisms have been suggested to achieve this, one of which involves sending a test particle to destroy the event horizon. In this study, we review the process of black hole destruction via test particles: its feasibility, necessary conditions, and the potential caveats involved. We also discuss key observables that could be detected by next-generation instruments, particularly the appearance of such objects when surrounded by an accretion disk, in both their final and transitional states. Finally, we highlight potential gaps and open questions in this area of research.

Keywords: regular black holes, overspinning mechanism, observational signatures

Share Link | Plain Format | Corresponding Author (Muhammad Fahmi Fauzi)


286 Theory, Nuclear, and Particle Physics ABS-14

An Isobar Model for Eta-Prime Meson Photoproduction on the Nucleon with Nucleon Resonances up to Spin-7/2
Billie Rizky, Dzulfiqar Fauzan Rabbani, Agus Salam, Imam Fachruddin

Departemen Fisika, FMIPA, Universitas Indonesia, Depok 16424, Indonesia


Abstract

We have investigated eta-prime meson photoproduction on the nucleon using an isobar model within an effective Lagrangian approach. This model incorporates background contributions, including Born terms and relevant vector meson exchanges, as well as the effects of intermediate nucleon resonances. Nucleon resonances with spin up to 7/2 and at least two-star status in the 2024 edition of the Review of Particle Physics (RPP) by the Particle Data Group (PDG) were included in the model. The free parameters of the model were fitted using available experimental differential cross section data from the A2 Collaboration at MAMI (2017) and the CLAS Collaboration (2009). By employing this approach, we phenomenologically obtained effective couplings related to the partial decay widths and helicity amplitudes of nucleon resonances. These results provide insight into the properties of nucleon resonances involved in eta-prime meson photoproduction.

Keywords: Eta-prime meson photoproduction, Isobar model, Nucleon resonance

Share Link | Plain Format | Corresponding Author (Billie Rizky)


287 Theory, Nuclear, and Particle Physics ABS-21

Comparative study of rotating neutron stars: Rastall-anisotropy vs chaotic magnetic fields
Muhammad Lawrence Pattersons (a*), Freddy Permana Zen (a,b), Getbogi Hikmawan (a,b)

a) Theoretical High Energy Physics Group, Department of Physics, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung, 40132, Indonesia
*m.pattersons[at]proton.me
b) Indonesia Center for Theoretical and Mathematical Physics (ICTMP), Institut Teknologi Bandung, Jl. Ganesha 10, Bandung, 40132, Indonesia


Abstract

We compare two theoretical frameworks for studying slowly rotating neutron stars: anisotropic configurations in Rastall gravity and models incorporating chaotic magnetic fields in general relativity. Employing a consistent equation of state and the Hartle-Thorne formalism, we investigate how each approach influences key physical properties such as rotational mass and moment of inertia. Our results indicate that Rastall gravity combined with anisotropy can increase the maximum mass of neutron stars, while chaotic magnetic fields have a pronounced impact on stellar deformation. These findings provide complementary perspectives on the structure of neutron stars under extreme conditions.

Keywords: Anisotropy, Chaotic magnetic fields, Rastall gravity, Rotating neutron stars

Share Link | Plain Format | Corresponding Author (Muhammad Lawrence Pattersons)


288 Theory, Nuclear, and Particle Physics ABS-42

Modified General Relativity and Neutron Star Properties Under r-Coordinate Transformation in Rainbow Gravity
Muhammad Hafizt Al Ghifari (a*), Anto Sulaksono (a), Handhika Satrio Ramadhan(a), Husin Alatas (b)

a) Departemen Fisika, FMIPA, Universitas Indonesia, Depok 16424, Indonesia
*muhammad.hafizt31[at]ui.ac.id
b) Theoretical Physics Division, Department of Physics, IPB University, Bogor 16680, Indonesia


Abstract

An investigation into the modified gravity model plays a crucial role in explaining the recent astrophysical data. In this study, we propose a transformation \(\tilde{r}=r/H(\varepsilon)^2)\ in the context of static neutron stars under rainbow gravity space-time, where (\H(\varepsilon))\ is the rainbow gravity function. This transformation caused a change in the TOV equation, resulting in a deviation from the standard model General Relativity (GR) prediction for the mass-radius profile. The updated mass-radius profile indicates that with a specific rainbow gravity function, our model aligns with the astrophysical data from the Neutron Star Interior Composition Explorer (NICER) and other limits set by earlier studies. Our findings suggest a modified gravity model that can help us properly describe the strange behavior of the recent astrophysical data.

Keywords: Modified gravity, neutron stars, rainbow gravity

Share Link | Plain Format | Corresponding Author (Muhammad Hafizt Al Ghifari)


289 Theory, Nuclear, and Particle Physics ABS-45

Comparison of X-Ray Machines Radiation Exposure Rates in Enclosed Facilities using Monte Carlo Simulation
Rio Natanael Wijaya, Rico Zaky Zakaria, Zaenal Abidin

Polytechnic Institute of Nuclear Technology


Abstract

To ensure the health and safety of operators and users, radiation exposure of X-Ray machines need to be periodically controlled. Radiation exposure calculation can be performed using deterministic methods (direct measurement) and stochastic methods (random sampling simulation). Radiation exposure calculations using deterministic method are often inconvenient, take a lot of time, and prone to human errors. That^s why random sampling is a convenient alternative. Random sampling is an appropriate method to measure radiation exposure due to the stochastic nature of radiation. Monte Carlo is one of such method. Enacting simulation using Monte Carlo is very convenient, but we need to be sure that the simulation result reflects the real measurement. This paper discusses about the comparision between direct measurement of two kinds of X-Ray machines and Monte Carlo simulation. Due to time constraint, the measurement was carried out within a voltage of 140 until 160 kV at the current of 5 mA. The radiation exposure was measured outside of four walls surrounding the machine. It was found the error are within 10% for certain walls, but there are some simulation result that are outside of expectation.

Keywords: Monte Carlo Simulation, Radiation Exposure Rate, X-Ray

Share Link | Plain Format | Corresponding Author (Rio Natanael Wijaya)


290 Theory, Nuclear, and Particle Physics ABS-59

Analysis of Reactivity Insertion Accident of Kartini Research Reactor using RELAP5
Sutanto (a*), Handika Dito Aulia Baihaqi (a), Anhar Riza Antariksawan (a)

(a) Polytecnic Institute of Nuclear Technology, National Research and Innovation Agency, Indonesia
(*) Corresponding author: suta012[at]brin.go.id


Abstract

Kartini research nuclear reactor is operated by National Research and Innovation Agency of Indonesia (BRIN) with the main purpose for education and training. A lot of students from departments of physics or nuclear engineering/science frequently uses the reactor for hands on activity related to reactor physics course. Therefore, reliability of the reactor operation in safety view is important to make sure the satisfaction of the safety standard in normal and abnormal conditions. Excess reactivity insertion is a possible accident to occur due to uncontrolled withdrawal of the control rods. It might lead to a very high temperature of the fuel and the fuel cladding which could affect the integrity of the fuel rod. This research has a purpose to analize the accident of reactivity insertion of the Kartini research reactor. A RELAP 5 code is used for the analysis. A calculation model is developed based on the Kartini reactor structure and applied in the RELAP5 code. Stepwise increases of the reactivity by 0.5 dollars (-) and 1.0 dollars (-) are simulated for the accident with two scenarios of the safety system responses, which are with and without SCRAM (rapid drop of control rods) actuation. The effects of the accident on the fuel and cladding temperatures are calculated. Calculation results show that higher reactivity insertion accident with SCRAM actuation leads to a tolerable fuel and cladding temperature increase, which is much lower than the safety citerion of 700 oC. When the SCRAM actuation is assumed to fail, the accidents effect higher fuel and cladding temperatures due to the absence of the negative reactivity feedback from the control rods. However, the temperature increases still satisfy the safety criterion. Kartini research reactor has a low thermal power of 100 kW with large volume of light water as the coolant. The accidents will be inherently mitigated by large negative reactivity of coolant density and Doppler, even in the failure of SCRAM actuation.

Keywords: Kartini reactor, Reactivity insertion accident, SCRAM

Share Link | Plain Format | Corresponding Author (Sutanto Sutanto)


291 Theory, Nuclear, and Particle Physics ABS-79

Magnetic Casimir effect for mixed scalar fields
Apriadi Salim Adam

Research Center for Quantum Physics, National Research and Innovation Agency (BRIN), South Tangerang 15314, Indonesia


Abstract

In this work, we study a system of the Casimir effect for mixed scalar fields under the influence of an external magnetic field. We use the Dirichlet boundary condition to represent the property of the plates. For this system, we calculated the Casimir energy considering both mass and flavor vacuum states. In addition, we also investigate the ratio of the influence of the strong magnetic field to that of the weak one for the Casimir energy. We find that the Casimir energy decreases as the magnetic field increases.

Keywords: Casimir Effect, Dirichlet boundary, mixed scalar fields, mass vacuum, flavor vacuum

Share Link | Plain Format | Corresponding Author (Apriadi Salim Adam)


292 Theory, Nuclear, and Particle Physics ABS-107

From Batik to Physics: Generating and Analyzing Fractal Patterns Inspired by Indonesian Textile Art
Didik Nur Huda (a*), Siti Ayu Kumala (a), Andry Fitrian(b), Sri Mayanty (b),Popi Purwanti (b)

a) Faculty of Engineering and Computer Science, Universitas Indraprasta PGRI, Jakarta, Indonesia
* didiks.physics[at]gmail.com
b) Faculty of Mathematics and Natural Sciences, Univeristas Indraprasta PGRI, Jakarta, Indonesia


Abstract

This study explores the intersection of fractal geometry and traditional Indonesian batik patterns through computational analysis. By employing higher-order polynomial functions, specifically variants of the Julia set, we investigate how mathematical models can generate complex motifs that resemble traditional batik. The fractal dimensions of the generated patterns are calculated using the box-counting method, and the visual complexity is compared to selected batik motifs from Indonesia. Results show that certain parameter modifications produce fractal patterns similar to traditional designs, while others reveal unexpected analogies with natural and physical phenomena, such as atomic orbitals and Chladni resonance patterns. This work highlights the potential of combining mathematics and art to both preserve and innovate within cultural heritage, providing new pathways for contemporary batik design using generative algorithms.

Keywords: Fractal geometry, Julia set, batik, fractal dimension, generative design, computational art, cultural heritage, pattern analysis

Share Link | Plain Format | Corresponding Author (Didik Nur Huda)


293 Theory, Nuclear, and Particle Physics ABS-188

Performance of a Bosonic Quantum Otto Refrigerator with Partial Thermalization
Shofiyah, Trengginas Eka Putra Sutantyo, Zulfi Abdullah

Theoretical Physics Laboratory, Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Andalas, Limau Manis, Padang, 25163, Indonesia


Abstract

Quantum refrigerators (QRs) have emerged as an essential study in the research of microscopic thermodynamic systems. In this study, we examine the performance of a quantum Otto refrigerator using an ideal non-interacting bosonic gas trapped in a cubic potential. The system is investigated in finite-time operation with a focus on the effects of partial thermalization during isochoric processes. The novelty of the research is to achieve a higher coefficient of performance (COP) at maximum power, namely CMP, by utilizing partial thermalization. Using the grand canonical ensemble formalism, thermodynamic properties are derived analytically to obtain the COP and the power of the refrigerator. Numerical calculations are performed to evaluate the CMP. This study aims to provide a more realistic characterization of the performance of the quantum refrigerator system at the microscopic scale, especially on the role of partial thermalization during finite-time operation.

Keywords: Quantum Refrigerator, Otto Cycle, Cubic Potential, Coefficient of Performance (COP), Partial Thermalization

Share Link | Plain Format | Corresponding Author (shofiyah shofiyah)


294 Theory, Nuclear, and Particle Physics ABS-193

Quantum Stirling Engine with Bose-Einstein Condensate
Piksi Amanda Sari, Trengginas Eka Putra Sutantyo, Zulfi Abdullah

Theoretical Physics Laboratory, Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Andalas, Limau Manis, Padang, 25163, Indonesia


Abstract

This research investigates the endoreversible quantum Stirling engine using the Bose-Einstein Condensate (BEC) as a working medium trapped in generic law potential. The engine operates endoreversibly in order to capture a realistic condition, where the temperature of working medium depends on the heating and cooling strokes time. The Fourier conduction law is applied to govern the rate of heat transfer between the system and the thermal reservoir in finite time, whilst in isoenergetic strokes, an infinite-time is required to accomplish the thermal equilibrium. The results show that the condensed phase of BEC has the ability to enhance the efficiency of the engine, especially at temperature near absolute zero. In conclusion, by adjusting the temperature and volume ratio, performance can be optimized to achieve the higher efficiency and power output of the Stirling engine.

Keywords: Quantum Stirling Engine, Bose-Einstein Condensate, Generic Law Potential, Efficiency, Endoreversible

Share Link | Plain Format | Corresponding Author (Piksi Amanda)


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