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All Journal Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Journal of Mathematical and Fundamental Sciences Journal of Engineering and Technological Sciences JURNAL ISTEK Indonesian Journal of Physics (IJP)

Abdul Waris

Nuclear Physics and Biophysics Research Group, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology

Author-ID : 3283356

Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics

Published : 21 Documents Claim Missing Document

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Isotopic Fission-yield Calculation of U-233, U-238 and Th-232 for Fast Energy Spectrum Abdul Waris; Rizal Kurniadi; Yuda S. Perkasa; Suwoto Suwoto
Indonesian Journal of Physics Vol 19 No 1 (2008): Vol. 19 No. 1, January 2008
Publisher : Institut Teknologi Bandung

An isotopic fission yield calculation method for fast energy spectrum of neutron has been proposed. This method was derived from a systematic of fission mass yield and a nuclei decay probability. The decay probability was calculated from the level density parameters that derived from a new potential function in combining with the shell correction. The potential function is a modified Wood-Saxon potential that we have called as an extended-Wood-Saxon potential. We have employed the data from RIPL-2 (Reference Input Parameter Library-2) in calculating the level density parameter. The calculation shows similar results compared to the isotopic mass yields of JENDL 3.2 for 233U and 232Th.

Determination of Energy Dependence Level Density Parameter and its Application in Fission Products Calculation of Pu-238 Abdul Waris; Rizal Kurniadi; Yuda S. Perkasa; Suwoto Suwoto
Indonesian Journal of Physics Vol 19 No 4 (2008): Vol. 19 No. 4, October 2008
Publisher : Institut Teknologi Bandung

The energy dependence of level density parameter has been calculated using extended wood-saxon potential. The extended version of potential has deep well parameter that is independent to the nucleon density. The potential is pure central interaction. Although the potential is different from mean field theory, it gives the better result than that of the reference input parameter library-2 (RIPL-2). The application of the level density parameter results in small discrepancies from ENDF results. This method has been adopted in example for calculating fission products of Pu-238.

Application of TALYS code for Calculation of Fission Cross Section and Fission Yield of Several Heavy Nuclides Yuda S. Perkasa; Rizal Kurniadi; Abdul Waris
Indonesian Journal of Physics Vol 20 No 3 (2009): Vol. 20 No. 3, July 2009
Publisher : Institut Teknologi Bandung

Nuclear data evaluation for fission cross section and fission yield had been performed by many investigators using different models of approximation theoretically. These models are encapsulated and implemented into computer codes to perform more robust nuclear reaction data calculations. TALYS is one of most successful nuclear reaction codes that used to determine fission cross section and fission yield. In this paper, TALYS code was used to calculate some fission reaction including Am-241 (n,f), Th-232 (n,f), and U-235 (n,f). These calculations are performed using different set of reaction mechanism and optical model parameter adjustment, such as fission barrier parameter, level density parameter, transmission mechanism, and so on. Reaction mechanism and parameter adjustment are selected based on reaction characteristics to obtain more accurate and reasonable result. The accuracy of calculation result are heavily depend on the reaction mechanism selection and parameter adjustment. All obtained results have been compared with ENDF nuclear data library.

Calculation of Level Density Parameter of Nuclear Reaction Using Neural Network Rizal Kurniadi; Yuda Satya Perkasa; Abdul Waris; Suwoto Suwoto
Indonesian Journal of Physics Vol 20 No 3 (2009): Vol. 20 No. 3, July 2009
Publisher : Institut Teknologi Bandung

Level density parameter (LDP) calculation is dependent upon shell correction value, which usually is obtained by using Strutinsky method. The Strutinsky method is method that uses energy levels from certain potential as main input. Therefore for each mass number it strongly needs the energy levels calculation. The energy levels computation is time-consuming process; hence, the new application of computation technique is needed to reduce computation time. This paper explains the application of neural network in LDP calculation. Based on knowledge from box type and harmonic potentials, LDP is predicted by using arbitrary potential

Study of Transuranium Recycling in PWR with 3-D Burnup Analysis using SRAC-COREBN Code Abdul Waris; T. Rahmanto; Imam Taufiq; Rizal Kurniadi; Zaki Su’ud
Indonesian Journal of Physics Vol 20 No 4 (2009): Vol. 20 No. 4, October 2009
Publisher : Institut Teknologi Bandung

In the light of proliferation resistance and terrorism issues several nuclear energy authorities and experts have suggested not to separate plutonium and minor actinides during the nuclear spent fuel reprocessing. Along the lines of this recommendation, a study of transuranium recycling in pressurized water reactor (PWR) with 3 dimensional burnup analysis by using SRAC-COREBN code has been carried out. The results show that by recycling of 8%, 10%, and 12 % of plutonium and minor actinides in PWR, the necessary uranium enrichment in loaded enriched uranium fuel of each scenario can be reduced to 2.7%, 1.52%, and 1.32%, correspondingly. In addition to this, the amount of loaded uranium fuel diminishes considerably with the increasing of the amount of recycled of plutonium and minor actinides.

Parallel Burnup Analysis of Long-life Fast Reactors Using Multi-core Programming Imam Taufiq; Zaki Su'ud; Abdul Waris; Mitra Djamal
Indonesian Journal of Physics Vol 21 No 1 (2010): Vol. 21 No. 1, January 2010
Publisher : Institut Teknologi Bandung

A scalable parallel program for burnup analysis of long-life fast reactor has been succesfully built. The scalability test was conducted by comparing the program performance on dual-core and quad-core platforms. The best speedup gain were 1.72 on dual core 2.0 GHz, 3.58 on quad-core 2.4 GHz and 3.05 on quad-core 3.2 GHz. The slight drop of the speedup on quad-core 3.2 GHz could be well explained in connection with communication-time needed in running parallel version of the program.

Comparative Study on 233U and Plutonium Utilization in Molten Salt Reactor Abdul Waris; Indarta Kuncoro Aji; Yanti Yulianti; Muhamad Ali Shafii; Imam Taufiq; Zaki Su'ud
Indonesian Journal of Physics Vol 21 No 3 (2010): Vol. 21 No. 3, July 2010
Publisher : Institut Teknologi Bandung

A comparative study on 233U and Pu utilization in a molten salt reactor (MSR) FUJI-12 has been conducted. Originally, FUJI-12 uses LiF , BeF2 , ThF4 and 233UF4 as fuel. In this study, we have evaluated the use of reactor grade plutonium and weapon grade plutonium beside 233U as the fuel of reactor. The need of 233U concentration for criticality is about 0.34%. In contrast, the demand of the reactor grade plutonium and the weapon grade plutonium fractions for criticality is around 3.0% and 0.96%, correspondingly. The neutron flux in the thermal energy region for 233U fuel case is higher than in Pu fuel cases due to larger value of the average number of neutrons produced per neutron absorbed in 233U fuel than that of 239Pu fuel, and may also because of the hardening of the neutron spectrum owing to plutonium utilization in thermal reactor.

Moving Average as an Alternative Technique in Determination of Nuclear Shell Correction Rizal Kurniadi; Yuda Satya Perkasa; Abdul Waris
Indonesian Journal of Physics Vol 21 No 4 (2010): Vol. 21 No. 4, October 2010
Publisher : Institut Teknologi Bandung

Since Strutinsky has proposed shell correction for calculating nuclear mass at 1967, there are many studies concerning this topic. These former researches used the expansion of a Dirac delta function which uses hermite polynomials as a method. This paper discusses about an alternative technique to calculate shell correction by employing a moving average method. The results show that, although the proposed method can produce the shell correction, it still has enough discrepancies compared to the experimental nuclear mass.

Energy of One-Dimensional Diatomic Elastic Granular Gas:Theory and Molecular Dynamics Simulation Siti Nurul Khotimah; Sparisoma Viridi; Widayani Widayani; Abdul Waris
Indonesian Journal of Physics Vol 22 No 3 (2011): Vol. 22 No. 3, July 2011
Publisher : Institut Teknologi Bandung

One-dimensional ideal diatomic gas is simulated through possible types of motions of its molecule. Energy of each type of its motion is calculated by both theoretical and numerical methods. Analytical calculation of kinetic energy of an atom in translational-vibrational motion is not simple, but it can be solved by numerical method using molecular dynamic simulation. This paper justifies that the kinetic energy of a diatomic molecule can be determined by two different approaches which give the same results. In the first approach, the kinetic energy is calculated as a summation of kinetic energy of each atom. In the second approach, the kinetic energy is calculated as a summation of kinetic energy of translational and vibrational motions.

Classical Approach for the Fusion Reaction of Deuterium-Tritium Using 2-D Velocity Verlet Method Dani Irawan; Sparisoma Viridi; RIzal Kurniadi; Abdul Waris
Indonesian Journal of Physics Vol 26 No 2 (2015): Vol. 26 No. 2, December 2015
Publisher : Institut Teknologi Bandung

Fusion reaction simulation of two types of nucleon: proton and neutron, is reported in this paper. The interactions between these nucleons are assumed to be only the nuclear force and electrostatic. The modeling is done in a classical approach where molecules formed by the nucleons are being collided with each other. In the model, some parameters were configured to see how these parameters affect the simulation. Some interesting results is that we can find a stable Helium-5 and a neutron-neutron pair as the product of the collision which should not have been possible due to the the quark interactions inside them. This leads us to a conclusion that we need to add a force-model for quark interaction. We do this by using an electrostatic-like force. However using this model, we may end up to instability of the tritium. In this paper we also report a configuration where the neutron-pair is unstable while tritium is stable.

Co-Authors Bambang Ari Wahjoedi Budiono Budiono Dani Irawan Epung Saepul Bahrum H. Sekimoto Hong Joo Kim Imam Taufiq Imam Taufiq Imam Taufiq Indarta Kuncoro Aji Kazuyoshi Fushinobu Ken Okazaki Kim, Hong Joo Mitra Djamal Moh Nurul Subkhi Muhamad Ali Shafii Nailatussaadah Nailatussaadah Puguh Andik Prastyo Rizal Kurniadi Rizal Kurniadi Rizal Kurniadi Rizal Kurniadi Rizal Kurniadi Rizal Kurniadi Rizal Kurniadi RIzal Kurniadi Rizal Kurniadi Rizal Kurniadi Sari, Mona Berlian Sidik Permana Siti Nurul Khotimah Sparisoma Viridi Suwoto Suwoto Suwoto Suwoto Suwoto Suwoto Syeilendra Pramuditya T. Rahmanto W. Nawangsary Widayani Widayani Willy Yanto Wijaya Wirawan, Rahadi Yanti Yulianti Yuda S. Perkasa Yuda S. Perkasa Yuda S. Perkasa Yuda Satya Perkasa Yuda Satya Perkasa Zaki Su'ud Zaki Suud

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