Progress in Nuclear Science and Technology最新文献_第4页

An application of genetic multi-objective optimization algorithm to neutron spectrum unfolding problem 遗传多目标优化算法在中子谱展开问题中的应用

Progress in Nuclear Science and Technology Pub Date : 2019-01-31 DOI: 10.15669/PNST.6.230

M. Woo, Jae Hyun Kim, J. Kim, Chewook Yim, Jae Yong Lee, Do-Hyun Kim, Quang Huy Khuat, Bo Kyun Seo, C. Shin, Jong Kyung Kim

引用次数: 1

AMPX MG library of JENDL-4.0 AMPX MG库的JENDL-4.0

Progress in Nuclear Science and Technology Pub Date : 2019-01-31 DOI: 10.15669/PNST.6.117

C. Konno

引用次数: 0

Study of the screening survey using an ambient dose equivalent rate survey meter in criticality accidents 临界事故中使用环境剂量当量率测量仪进行筛选调查的研究

Progress in Nuclear Science and Technology Pub Date : 2019-01-31 DOI: 10.15669/PNST.6.152

K. Hoshi, N. Tsujimura, Tadayoshi Yoshida, O. Kurihara, Eun-Joo Kim, K. Yajima

{"title":"Study of the screening survey using an ambient dose equivalent rate survey meter in criticality accidents","authors":"K. Hoshi, N. Tsujimura, Tadayoshi Yoshida, O. Kurihara, Eun-Joo Kim, K. Yajima","doi":"10.15669/PNST.6.152","DOIUrl":"https://doi.org/10.15669/PNST.6.152","url":null,"abstract":"When a criticality accident occurs, a screening survey to triage high-dose radiation exposed persons is performed. We established a rapid method for the screening survey by measuring the gamma dose rate mainly from 24Na in the victims’ body with a conventional NaI(Tl) scintillation survey meter. In this study, a water-filled slab phantom containing NaCl was irradiated with neutrons from a 252Cf neutron source. The radioactivity concentration of 24Na produced in the phantom was determined by means of gamma-ray spectrometry and simulations using the Monte Carlo N-Particle Transport Code. The ambient dose equivalent rates at the phantom’s outer surface were simulated by the Monte Carlo N-Particle Transport Code and were directly measured with a NaI(Tl) scintillation survey meter. From the experiments and calculations, we obtained the results that 1 Gy (neutron absorbed dose) corresponds to 18–76 μSv/h (ambient dose equivalent rate) at the surface of the victim’s body, which can be distinguished from normal background levels. Therefore, this method allows us to rapidly screen high-dose radiation-exposed victims.","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77269158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Emission image of X-ray-irradiated CR-39 stick doped with methylviologen-encapsulated silica nanocapsules using LED light 掺杂甲基viologen包封二氧化硅纳米胶囊的CR-39棒在LED光下的x射线辐照发射图像

Progress in Nuclear Science and Technology Pub Date : 2019-01-31 DOI: 10.15669/PNST.6.91

H. Miyoshi, Fumio Kida, Yoshiyasu Kawase, Kenji Yamada, Motoharu Sasaki, Hidenori Shoji, Hitoshi Hase

引用次数: 1

Estimation of neutron duct streaming with the feeder for the power supply system in the JT-60 tokamak fusion device facility JT-60托卡马克聚变装置供电系统馈线中子管道流的估计

Progress in Nuclear Science and Technology Pub Date : 2019-01-31 DOI: 10.15669/PNST.6.95

A. Sukegawa, Koichi Okuno

引用次数: 0

ACE library of JENDL-4.0/HE JENDL-4.0/HE的ACE库

Progress in Nuclear Science and Technology Pub Date : 2019-01-31 DOI: 10.15669/PNST.6.225

N. Matsuda, S. Kunieda, Tsutomu Okamoto, Kenichi Tada, C. Konno

{"title":"ACE library of JENDL-4.0/HE","authors":"N. Matsuda, S. Kunieda, Tsutomu Okamoto, Kenichi Tada, C. Konno","doi":"10.15669/PNST.6.225","DOIUrl":"https://doi.org/10.15669/PNST.6.225","url":null,"abstract":"The Intra-Nuclear Cascade model employed into general-purpose Monte-Carlo simulation codes is not always applicable in the energy region from 20 MeV to several hundreds of MeV. In order to improve accuracy of the Monte-Carlo simulations including this energy region, the fourth version of Japanese Evaluated Nuclear Data Library High Energy File (JENDL-4.0/HE) as a new special purpose file, was released in 2015. It includes evaluated cross-sections for incident neutrons and protons up to 200 MeV for 130 and 133 nuclei, respectively. A Compact version of ENDF (ACE) library of all the neutronand proton-induced reaction data for the MCNP, MCNPX and PHITS codes has been produced with the nuclear data processing code NJOY2016.9, which was modified to keep laboratory angle-energy distribution form (LAW=67) in the ACE library of proton because the original NJOY converts laboratory angle-energy distribution form (LAW=67) to continuum energy-angle distribution form (LAW=61) automatically and PHITS can only treat angle-energy distribution form (LAW=67) for proton. Validations for the ACE library were performed through benchmark calculations for high-energy shielding experiments with PHITS.","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86398765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Development of a wireless multisensor active personal dosimeter-tablet system 无线多传感器有源个人剂量计-片剂系统的研制

Progress in Nuclear Science and Technology Pub Date : 2019-01-31 DOI: 10.15669/PNST.6.73

T. Fujibuchi, Airi Inoue, Y. Ishigaki, Y. Matsumoto

{"title":"Development of a wireless multisensor active personal dosimeter-tablet system","authors":"T. Fujibuchi, Airi Inoue, Y. Ishigaki, Y. Matsumoto","doi":"10.15669/PNST.6.73","DOIUrl":"https://doi.org/10.15669/PNST.6.73","url":null,"abstract":"Medical staff who perform interventional radiology face the risk of exposure to relatively high doses of primary radiation and scattered radiation emitted from patients’ bodies. For monitoring this exposure, we developed a wireless multisensor dosimeter that we named “Pocket Dose,” which provides real-time visualization of dose levels on an Android tablet screen. In this study, we investigate the characteristics of the energy and dose rates of the developed system comprising silicon PIN photodiode detectors, a signal transmitter, and a tablet for data display. The detection unit is equipped with two types of sensors: one for measuring low dose rates and the other for measuring high dose rates. In addition, four detectors are connected to the transmitter with a one-meter-long cable. These detectors are designed to measure the unequal radiation exposures at the chest, neck, and fingers of medical staff. The signals from the detectors transmit count information to the tablet using Bluetooth. The dose-rate linearities of the high-sensitivity and low-sensitivity sensors are confirmed to be less than 14.8 and 82.8 mSv/h, respectively. The system has great potential for energy correction using the energy spectra information. Using this system with wireless communication, real-time management of staff’s exposure becomes easy. Moreover, high expandability is expected since it uses a tablet.","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89415040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Measurement of activation cross sections of aluminum for protons with energies between 0.4 GeV and 3.0 GeV at J-PARC J-PARC 0.4 ~ 3.0 GeV质子对铝活化截面的测量

Progress in Nuclear Science and Technology Pub Date : 2019-01-31 DOI: 10.15669/PNST.6.171

H. Matsuda, S. Meigo, H. Iwamoto

引用次数: 0

Fukushima radionuclides in the marine environment from coastal region of Japan to the Pacific Ocean through the end of 2016 到2016年底，从日本沿海地区到太平洋的海洋环境中的福岛放射性核素

Progress in Nuclear Science and Technology Pub Date : 2019-01-31 DOI: 10.15669/PNST.6.1

M. Aoyama, Y. Inomata, D. Tsumune, Y. Tateda

{"title":"Fukushima radionuclides in the marine environment from coastal region of Japan to the Pacific Ocean through the end of 2016","authors":"M. Aoyama, Y. Inomata, D. Tsumune, Y. Tateda","doi":"10.15669/PNST.6.1","DOIUrl":"https://doi.org/10.15669/PNST.6.1","url":null,"abstract":"The authors present total amount of released radiocaesium from FNPP1 accident which satisfy mass balance in all components of the environment. The authors also present consensus values of Fukushima Dai-ichi Nuclear Power Plant (FNPP1) derived 137Cs in the environment. Total amount of atmospheric release was 15-20 PBq and direct discharge to the ocean was 3-6 PBq, respectively. 12-15 PBq was deposited in the North Pacific and 3-6 PBq was deposited on land, respectively. Therefore 15-18 PBq was injected as sum of atmospheric deposition and direct discharge in the North Pacific Ocean. The authors also present temporal variation of 137Cs in coastal region close to FNPP1 site. Based on radiocaesium activity concentration and 134Cs/137Cs activity ratios decay corrected to 11 March 2011 in surface water, major source of radiocaesium is still FNPP1 site and contribution from global fallout 137Cs increased at Tomioka and Hasaki depending on the distances from FNPP1 site. A part of radiocaesium in the Sub Tropical Mode Water (STMW) in the Pacific Ocean is already obducted from ocean interior and enter into northern part of East China sea and in Japan Sea.","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86071912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Development of analysis method for airborne radiation monitoring using the inverse problem solutions 基于反问题解的机载辐射监测分析方法的发展

Progress in Nuclear Science and Technology Pub Date : 2019-01-31 DOI: 10.15669/PNST.6.63

M. Sasaki, Azusa Ishizaki, Y. Sanada

{"title":"Development of analysis method for airborne radiation monitoring using the inverse problem solutions","authors":"M. Sasaki, Azusa Ishizaki, Y. Sanada","doi":"10.15669/PNST.6.63","DOIUrl":"https://doi.org/10.15669/PNST.6.63","url":null,"abstract":"Following the accident at the Fukushima Daiichi Nuclear Power Plant, some kind of unmanned aerial vehicles (UAVs) have been used to collect environmental radiation data. The Japan Atomic Energy Agency has been developed methods for analyzing radiation measurements taken by a small multirotor UAV. In the conventional method, count rate was converted to the air dose rate using a simple parameter. Therefore, such a conversion of the air dose rate using the conventional method is difficult in an area where the distribution of air dose rate is heterogeneous, or the terrain is complex. The goal of this study was to apply the inverse radiation method, which is used in medical applications such as positron emission tomography, for environmental radiation measurement. Basic algorithm was established for conversion from count rate to air dose rate in considering of topographic data. The algorithm was applied to real radiation data obtained by a UAV, and its accuracy was evaluated by comparing that data with ground measurement data. As compared with conventional methods, our algorithm was demonstrated to achieve a more accurate estimation of the air dose rate on the ground.","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82379564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9