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INDONESIA
Atom Indonesia Journal
Published by Badan Tenaga Nuklir Nasional
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Materials Science & Nanotechnology
Exist for publishing the results of research and development in nuclear science and technology Starting for 2010 Atom Indonesia published three times a year in April, August, and December The scope of this journal covers experimental and analytical research in all areas of nuclear science and technology. including nuclear physics, reactor physics, radioactive waste treatment, fuel element development, radioisotopes and radio pharmaceutical engineering, nuclear and radiation safety, neutron scattering, material science and technology, as well as utilization of isotopes and radiation in agriculture, industry, health and environment.
Arjuna Subject : -
Articles 452 Documents
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Preface Atom Indonesia Vol 46 No 1 prfc prfc
Atom Indonesia Vol 46, No 1 (2020): April 2020
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (684.767 KB) | DOI: 10.17146/aij.2020.1062

Abstract

Safety Analysis of the TRIGA 2000 U3Si2-Al Fuel Core Under Reactivity Insertion Accidents S. Pinem; T. Surbakti; P.H. Liem
Atom Indonesia Vol 46, No 1 (2020): April 2020
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (13.016 KB) | DOI: 10.17146/aij.2020.977

Abstract

TheTRIGA 2000 reactor in Bandung is planned to change its fuel type from the TRIGA fuel rod type to the U3Si2-Al plate type of low enriched uranium of 19.75 % with uranium density of 2.96 gU/cc. A study on the neutronic parameters from the equilibrium core has been done. To ensure safe operation of the new fuel,  thermodynamic evaluation of the core needs to be done. The purpose of this study is to conduct a reactor safety analysis of reactivity insertion during withdrawal of the control rod and to study the effect of this reactivity insertion on the power and the maximum temperature of the fuel and the cladding. Reactivity insertion accident is the main factor of the design basis accidents in nuclear reactor design. A simulation of transient for reactivity insertion has been carried out using a coupled neutronic and thermal-hydraulic MTR-DYN code. The code was developed based on three-dimensional multigroup neutron diffusion theory. The coupled space and time-dependent problem were solved by adiabatic model. Transient analysis was performed for a reactivity insertion of 32.33 pcm/s with the assumption that all of the control rods were rapidly withdrawn. For the insertion at a low power of 100 W, the maximum power achieved was 2.74 MW while a maximum power of 2.3 MW was achieved for the power transient of 1 MW. The maximum temperature of the coolant, the cladding, and the fuel for TRIGA 2000 core does not exceed the allowable safety limit for reactivity insertions.
Acknowledgement Atom Indonesia Vol 46 No 1 ack ack
Atom Indonesia Vol 46, No 1 (2020): April 2020
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (23.456 KB) | DOI: 10.17146/aij.2020.1063

Abstract

Comparison of 192Os(p,n)192Ir and 192Os(d,2n)192Ir Nuclear Reactions for 192Ir Production M. Rezki; I. Kambali; E. Hidayanto; F. Arianto
Atom Indonesia Vol 46, No 1 (2020): April 2020
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (29.951 KB) | DOI: 10.17146/aij.2020.955

Abstract

Iridium-192 (192Ir ) is a radionuclide currently suggested for brachyteraphy. One of the methods employed to produce high purity 192Ir is by irradiation of Osmium-192  (192Os) target using cyclotron. The success of 192Ir radionuclide production in cyclotrons requires deep understanding of irradiation parameters, including particle energy, target preparation and thickness, particle beam curent and irradiation time. Therefore, theoretical calculations of the 192Ir radioactivity yields should be carried out as a preliminary measure for more efficient 192Ir production. In this study, 192Ir production was simulated using the SRIM 2013 program to determine the optimum target thickness while the nuclearcross-section data were extracted from TENDL 2017. Two nuclear reactions for 192Ir production yield calculations were compared, i.e., 192Os(p,n)192Ir  and 192Os(d,2n)192Ir. The radioactivity yields for 192Os(p,n)192Ir nuclear reaction was found to be lower than  192Os(d,2n)192Ir reaction. For proton and deuteron energy of 30 MeV, the maximum radioactivity yield was 6.79 GBq for 192Os(p,n)192Ir and  26.14 GBq for 192Os(d,2n)192Ir. Several radionuclide impurities such as 191mIr, 190Ir, 191Os and 189Re were predicted to be generated during 192Os(p,n)192Ir reaction for proton incident energy between 1 and 30 MeV; meanwhile, 192Ir, 191mIr, 193Os, 193mIr, 192mOs and 191Os radionuclides were expected to contaminate during 192Os(d,2n)192Ir reaction for deuteron energy between 1 and 30 MeV. Results of this study can be used as a reference for future 192Ir radionuclide production when proton or deuteron beams are considered to be employed.
Effects of Gamma Irradiation on Mating Competitiveness of Male Culex quinquefasciatus (Diptera:Culicidae) in Laboratory T. Ramadhani; U.K. Hadi; S. Soviana; Z. Irawati; A. Rahayu; S Sunaryo
Atom Indonesia Vol 46, No 3 (2020): December 2020
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/aij.2020.927

Abstract

Culex quinquefasciatus is the main vector of lymphatic filariasis in Pekalongan City. Sterile Insect Technique (SIT) can be employed as complementary vector control for filariasis. The key success of this technique depends on the ability of laboratory-reared sterile males to mate with the wild-type females. This research aimed to was to determine the mating competitiveness, fecundity and fertility of sterile males of Cx. quinquefasciatus. The pupae of Cx. quinquefasciatus were gamma irradiated at doses of 60, 70, and 80 Gy, whereas unirradiated pupae were prepared as control. The mosquitoes emerging from the irradiated pupae were found to be able to mate with normal females in the cages. Observation was done for the mean female laying eggs, the fecundity, the fertility and the mating competitiveness. The observation data were analyzed by one-way ANOVA. The results show that the irradiated Cx. quinquefasciatus at the test doses does not affect the fecundity and the mating competitiveness, but the fertility is disturbed (sterile). A dose of 70 Gy was found to be the optimum dose, which gave a fertility rate of 1.8 % (98.2 % sterile) with a value of competitiveness (C index) of 0.568. Based on these results, irradiated Cx. quinquefasciatus can be recommended for semifield application.
Proposed Managements of 137Cs Contaminated Soil: Case Study in South Tangerang City B. Setiawan; D. Iskandar; G. Nurliati; H. Sriwahyuni; M Mirawaty; P. A. Artiani; K. Heriyanto; N. E. Ekaningrum; Y. Purwanto; S Sumarbagiono
Atom Indonesia Vol 47, No 1 (2021): April 2021
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/aij.2021.1055

Abstract

Recently, BAPETEN found contamination of 137Cs while testing environmental radiation monitoring equipment in an area in South Tangerang City. The area, therefore, needs to be cleaned up by performing decontamination followed by the activity of treating the contaminated soil. The decontamination works were carried out by excavating the contaminated soil on the surface to a depth of more than 1.5 m, and then the soils were put into the 100L drum. Decontamination work resulted in a significant reduction dose exposure in the area to 0.3-0.75 mSv/h. The drums containing contaminated soil were then sent to the interim storage facility in BATAN Serpong facility for further treatment. To resolve the 137Cs contaminant, some alternatives in the decontamination and management of the contaminated soils were studied. Some techniques and strategies for decontamination and managing 137Cs are presented in this paper. Management that involves wet and dry methods will be proposed in this paper. By comparing and evaluating various alternative management methods, an appropriate method for treating the contaminated soil in South Tangerang City can be obtained. The objective of the study was to find a suitable management method for the contaminated soil based on the proposed alternative management methods.In the present case, the compaction method seems promising for use soon.
Acknowledgement Atom Indonesia Vol 46 No 2 ack ack
Atom Indonesia Vol 46, No 2 (2020): August 2020
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/aij.2020.1092

Abstract

Investigation on the Background Radiation of Abakaliki Rice Mill in Ebonyi State, Nigeria A. Nwachukwu; F. C. Ikeagwuani; A. O. Adeboje
Atom Indonesia Vol 47, No 1 (2021): April 2021
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/aij.2021.1040

Abstract

This study investigated the background ionizing radiation of Abakaliki rice mills. The requirement to monitor this site is because the prevalent activities in the site suggest that it is a source of ionizing radiation. The activities include fuel stations and excavation sites. Other sources are various chemicals and agrochemicals (like Phosphate, Uranium, Thorium, and Radium) used during the planting of the different rice species. There is, therefore, an urgent need to investigate the radiation level of Abakaliki rice mills in Ebonyi state, Nigeria to ascertain if it has passed the safety standards. The investigation was carried out using the Radalert 100 radiation monitor and a geographical positioning system (Garmin GPSMAP 765). The studied site was split into different points with each representing a mill that houses different grinding plants. This study included all the sections of the mill. The mean background radiation exposure rate ranges from 0.014mRhr-1to 0.0204mRhr-1. The obtained values are higher than the world standard limit of 0.013mRhr-1 recommended by ICRP except point 7 which corresponds to the top of the rice husk dumpsite. The calculated absorbed dose rates for the various sections of the mill ranged from 99.18 nGh-1 to 177.48 nGyh-1. These values of absorbed dose rates were observed to be far higher than the world permissible value of 89 nGyh-1. The annual effective dose equivalent (AEDE) for the exposure values ranged from 0.122 mSvy-1 to 0.218 mSvy-1 which are far lower than the ICRP permissible limits of 1.00 mSvlyr for the public and therefore implies absence of any immediate radiological risk. The excess lifetime cancer risk for the mill users were all above the 0.29 × 10-3 world recommended value. This suggests a possibility of the rice mill workers developing radiation-related illnesses over time.
Natural Radionuclides Determination and Radiological Hazard Assessments in Soil from Tual and Kei Islands, Indonesia S Syarbaini; K Kusdiana; M. Wiyono; D. Iskandar
Atom Indonesia Vol 46, No 2 (2020): August 2020
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/aij.2020.995

Abstract

Natural radionuclides 226Ra, 232Th and 40K in soil are the primary component of the background exposure sources of the population. Study of the external exposure due to gamma-ray radiation of natural radionuclides is important because this may contribute significantly to the total annual individual dose. The purpose of this   study is to investigate the natural radionuclides in soils collected from Tual and Kei islands and assess the radiological hazard due to natural radionuclides contents in soil. The soil samples were analyzed for natural radionuclides 226Ra, 232Th and 40K using gamma ray spectrometry. Radiological hazard parameters were estimated from the activity concentration of these radionuclides in order to assess health implication of exposure of the general public. The activity concentrations of 226Ra, 232Th and 40K in soil samples varied from 7.50 Bq kg-1 to 6326 Bq kg-1, 0.99 Bq kg-1 to 157 Bq kg-1, 2.97 kg-1to 98.91 Bq kg-1 with the average value of 2162 Bq kg-1; 69.68 Bq kg-1 and 30.74 Bq kg-1, respectively. The absorbed dose rates due to the presence of 226Ra, 232Th and 40K, in soil samples in the studied area vary between the range of 4.88 nGy h-1 and 3018.80 nGy h-1 with the average value of 1042 nGy h-1. The corresponding outdoor annual effective doses ranged between 0.01 mSv y-1 and 3.70 mSv y-1 with the average value of 1.28 mSv y-1. Radium equivalent activities are calculated to be in the range of 10.42 Bq kg-1 -6553.03 Bq kg-1 with the average value of 2264 Bq kg-1.The external and internal hazard indexes vary from 0.03 to 17.71 with the average value of 6.12 and 0.05 to 34.81 with the average value of 11.96, respectively. All calculated average radiological hazard indices were higher than the limits recommended for individual members of the public.
Acknowledgement Atom Indonesia Vol 46 No 3 ack46no3 ack46no3
Atom Indonesia Vol 46, No 3 (2020): December 2020
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/aij.2020.1109

Abstract

Page 20 of 46 | Total Record : 452

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