K. Okumura, E. Riyana, Sato Wakaei, H. Maeda, J. Katakura, S. Kamada, M. Joyce, B. Lennox
We propose a method to predict the dose rate distribution in a primary containment vessel of Unit 1 of the Fukushima Daiichi Nuclear Power Station (1F) using numerical calculations and measured data.
本文提出了一种利用数值计算和实测数据预测福岛第一核电站1号机组主安全壳内剂量率分布的方法。
{"title":"A method for the prediction of the dose rate distribution in a primary containment vessel of the Fukushima Daiichi Nuclear Power Station","authors":"K. Okumura, E. Riyana, Sato Wakaei, H. Maeda, J. Katakura, S. Kamada, M. Joyce, B. Lennox","doi":"10.15669/PNST.6.108","DOIUrl":"https://doi.org/10.15669/PNST.6.108","url":null,"abstract":"We propose a method to predict the dose rate distribution in a primary containment vessel of Unit 1 of the Fukushima Daiichi Nuclear Power Station (1F) using numerical calculations and measured data.","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75793869","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}
Makoto Kobayashi, T. Nishitani, A. Kato, T. Saze, Tomoyo Tanaka, S. Yoshihashi, K. Ogawa, M. Isobe
The application of imaging plate (IP) method using indium foils to measure the distribution of fast neutron in large area was evaluated in this work. The radioactive nuclides of indium were individually quantified by high-purity germanium detector (HPGe) and chronological IP measurements. The detection efficiencies of each radioactive nuclide for various thicknesses of foil mylar polyester film were summarized. The scope of application for proposed method were clearly dependent on the flux ratio of fast and thermal neutron, limiting the applicable region only being close to the neutron source.
{"title":"Evaluation of imaging plate measurement for activated indium as fast-neutron detector in large radiation field","authors":"Makoto Kobayashi, T. Nishitani, A. Kato, T. Saze, Tomoyo Tanaka, S. Yoshihashi, K. Ogawa, M. Isobe","doi":"10.15669/PNST.6.58","DOIUrl":"https://doi.org/10.15669/PNST.6.58","url":null,"abstract":"The application of imaging plate (IP) method using indium foils to measure the distribution of fast neutron in large area was evaluated in this work. The radioactive nuclides of indium were individually quantified by high-purity germanium detector (HPGe) and chronological IP measurements. The detection efficiencies of each radioactive nuclide for various thicknesses of foil mylar polyester film were summarized. The scope of application for proposed method were clearly dependent on the flux ratio of fast and thermal neutron, limiting the applicable region only being close to the neutron source.","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74012573","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}
H. Miyamaru, T. Kojima, Kiwamu Omura, R. Taniguchi
A gamma-ray dose measurement system with a small-sized cesium iodide scintillator and a long-optical-fiber combination is developed to monitor an intense cobalt-60 gamma-ray radiation source in a deep-water pool, for radiation safety. The compact sensor consists of cesium iodide doped with thallium scintillator and a light focusing lens component. The luminescence of the scintillator, as the gamma-ray response, is collected using the lens and introduced into the 10 m-long optical fiber. Finally, the light output from the sensor is input to a photomultiplier and converted to an output voltage corresponding to the luminescence intensity. A 940 TBq cobalt-60 gamma-ray source is placed at the pool bottom and used as a target for the monitoring experiment. The dose rate to water is measured with two sensors located at different depth positions. By moving the sensors horizontally, the dose rates at several positions within the pool are measured and compared. The distance to the source can be estimated from the dose rate measured at the sensor position. Observations of the dose rate changes by moving both the sensors vertically against the pool bottom indicate that the motion of the source in an upper direction can be detected using two sensors located at different depths.
{"title":"Development of intense gamma-ray source monitoring system in water for radiation safety","authors":"H. Miyamaru, T. Kojima, Kiwamu Omura, R. Taniguchi","doi":"10.15669/PNST.6.126","DOIUrl":"https://doi.org/10.15669/PNST.6.126","url":null,"abstract":"A gamma-ray dose measurement system with a small-sized cesium iodide scintillator and a long-optical-fiber combination is developed to monitor an intense cobalt-60 gamma-ray radiation source in a deep-water pool, for radiation safety. The compact sensor consists of cesium iodide doped with thallium scintillator and a light focusing lens component. The luminescence of the scintillator, as the gamma-ray response, is collected using the lens and introduced into the 10 m-long optical fiber. Finally, the light output from the sensor is input to a photomultiplier and converted to an output voltage corresponding to the luminescence intensity. A 940 TBq cobalt-60 gamma-ray source is placed at the pool bottom and used as a target for the monitoring experiment. The dose rate to water is measured with two sensors located at different depth positions. By moving the sensors horizontally, the dose rates at several positions within the pool are measured and compared. The distance to the source can be estimated from the dose rate measured at the sensor position. Observations of the dose rate changes by moving both the sensors vertically against the pool bottom indicate that the motion of the source in an upper direction can be detected using two sensors located at different depths.","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81706770","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}
{"title":"Direct radiation dose measurement of rectum during High-Dose-Rate 192Ir brachytherapy for cervical cancer treatment","authors":"E. Tomita, H. Hayashi, T. Asahara, K. Sakuragawa, Yasufumi Shitakubo, H. Saegusa, H. Ikushima, Y. Kanazawa, S. Goto, T. Okazaki, T. Hashizume, V. Cruz","doi":"10.15669/PNST.6.39","DOIUrl":"https://doi.org/10.15669/PNST.6.39","url":null,"abstract":"aSchool of Health Sciences,Tokushima University, 3-18-15 Kuramoto, Tokushima, Tokushima, 770-8509, Japan; bGraduate School of Health Sciences, Tokushima University, 3-18-15 Kuramoto, Tokushima, Tokushima, 770-8509, Japan; cTokushima University Hospital, 3-18-15 Kuramoto, Tokushima, Tokushima, Japan; dNagase Landauer, Ltd., Block C22-1, Suwa, Tsukuba, Ibaraki, Japan; fCollege of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 920-0942, Japan","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":"196 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91462028","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}
Sang Hyun Park, Min Kyung Kim, S. Han, Hwe-in Kim, M. C. Song, J. K. Chang
{"title":"Quality control to manage unsealed radioactive sources in nuclear medicine","authors":"Sang Hyun Park, Min Kyung Kim, S. Han, Hwe-in Kim, M. C. Song, J. K. Chang","doi":"10.15669/PNST.6.26","DOIUrl":"https://doi.org/10.15669/PNST.6.26","url":null,"abstract":"","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90404984","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}
After the TEPCO’s Fukushima NPP Accident in 2011, it became necessary to evaluate the absorbed dose distant from beta emitting nuclides. We focused our attention on the beta sources (such as 90Sr/90Y) released in the accident. We try to perform benchmark analysis using PHITS code for the evaluation of the absorbed dose from beta radiation. The simulated absorbed dose rates for beta radiation by PHITS agreed with the measured absorbed dose rates to within 6% in the range from 1 to 1000 μm deep in ICRU tissue. The PHITS code showed almost the same results as EGS5 code. The PHITS’s ability to visualize with T-Deposit is useful and powerful to provide presentation Dose MAP from beta radiation.
{"title":"Benchmark of PHITS for an absorbed dose rate evaluation from beta-radiation","authors":"F. Nobuhara, Shohei Iwai","doi":"10.15669/pnst.6.189","DOIUrl":"https://doi.org/10.15669/pnst.6.189","url":null,"abstract":"After the TEPCO’s Fukushima NPP Accident in 2011, it became necessary to evaluate the absorbed dose distant from beta emitting nuclides. We focused our attention on the beta sources (such as 90Sr/90Y) released in the accident. We try to perform benchmark analysis using PHITS code for the evaluation of the absorbed dose from beta radiation. The simulated absorbed dose rates for beta radiation by PHITS agreed with the measured absorbed dose rates to within 6% in the range from 1 to 1000 μm deep in ICRU tissue. The PHITS code showed almost the same results as EGS5 code. The PHITS’s ability to visualize with T-Deposit is useful and powerful to provide presentation Dose MAP from beta radiation.","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86428680","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}
S. Kamada, M. Katoh, K. Nishimura, M. Nancekievill, S. Watson, B. Lennox, A. Jones, M. Joyce, K. Okumura, J. Katakura
Instruments and Methods were developed to explore fuel debris at the bottom of the Primary Containment Vessel in the Fukushima Daiichi Nuclear Power Plant. A Remotely Operated Vehicle was designed to explore fuel debris and to investigate the distribution and surface profile of fuel debris at the bottom of the primary containment vessel using a sonar and a compact radiation detector. Several tests were carried out using various facilities to determined the capabilities of the sonar and gamma-ray detector to determine the feasibility of the device
{"title":"Development of ROV system to explore fuel debris in the Fukushima Daiichi Nuclear Power Plant","authors":"S. Kamada, M. Katoh, K. Nishimura, M. Nancekievill, S. Watson, B. Lennox, A. Jones, M. Joyce, K. Okumura, J. Katakura","doi":"10.15669/PNST.6.199","DOIUrl":"https://doi.org/10.15669/PNST.6.199","url":null,"abstract":"Instruments and Methods were developed to explore fuel debris at the bottom of the Primary Containment Vessel in the Fukushima Daiichi Nuclear Power Plant. A Remotely Operated Vehicle was designed to explore fuel debris and to investigate the distribution and surface profile of fuel debris at the bottom of the primary containment vessel using a sonar and a compact radiation detector. Several tests were carried out using various facilities to determined the capabilities of the sonar and gamma-ray detector to determine the feasibility of the device","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":"02 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85960270","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}
M. Simonnet, Y. Miyazaki, Shin'ichi Suzuki, T. Yaita
{"title":"Cesium liquid-liquid extraction by calix-crown ethers: solvent effect","authors":"M. Simonnet, Y. Miyazaki, Shin'ichi Suzuki, T. Yaita","doi":"10.15669/PNST.5.66","DOIUrl":"https://doi.org/10.15669/PNST.5.66","url":null,"abstract":"","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82525240","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}
T. Kobayashi, Shin'ichi Suzuki, H. Shiwaku, T. Yaita
The complexation properties of N-alkyl-N-phenyl-1,10-phenanthroline-2-carboxamide (PTA) with trivalent lanthanides (Ln) were investigated based on structural analysis by using X-ray crystallography and extended X-ray absorption fine structure (EXAFS) methods. As a result, it is revealed that two PTA molecules coordinate with Ln as tridentate ligand via two nitrogen in phenanthroline moiety and one oxygen in amide moiety in both crystal and solution states. The slight difference in coordination bond distances are observed between Eu and Nd complexes, this difference corresponds to the difference in ionic radius between Nd and Eu. This result indicates slight difference in ionic radii of Ln hardly affects coordination properties of PTA.
采用x射线晶体学和扩展x射线吸收精细结构(EXAFS)方法研究了n -烷基- n -苯基-1,10-菲罗啉-2-carboxamide (PTA)与三价镧系元素(Ln)的络合性能。结果表明，在晶体状态和溶液状态下，两个PTA分子通过邻菲罗啉部分的两个氮和酰胺部分的一个氧与Ln作为三齿配体进行配位。Eu和Nd配合物的配位键距离有细微差异，这种差异对应于Nd和Eu之间离子半径的差异。结果表明，Ln离子半径的微小差异对PTA的配位性能影响不大。
{"title":"Lanthanides complexation properties of O, N-hetero donor ligand PTA","authors":"T. Kobayashi, Shin'ichi Suzuki, H. Shiwaku, T. Yaita","doi":"10.15669/PNST.5.74","DOIUrl":"https://doi.org/10.15669/PNST.5.74","url":null,"abstract":"The complexation properties of N-alkyl-N-phenyl-1,10-phenanthroline-2-carboxamide (PTA) with trivalent lanthanides (Ln) were investigated based on structural analysis by using X-ray crystallography and extended X-ray absorption fine structure (EXAFS) methods. As a result, it is revealed that two PTA molecules coordinate with Ln as tridentate ligand via two nitrogen in phenanthroline moiety and one oxygen in amide moiety in both crystal and solution states. The slight difference in coordination bond distances are observed between Eu and Nd complexes, this difference corresponds to the difference in ionic radius between Nd and Eu. This result indicates slight difference in ionic radii of Ln hardly affects coordination properties of PTA.","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76181119","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}
M. Morita, H. Tomita, Ryohei Ohtake, Keita Kanenari, Atsushi Nakamura, Kosuke Saito, Toshihide Kawai, Takeo Okumura, V. Sonnenschein, T. Sakamoto
Development of a micro imaging system for element-selective analysis by coupling of focused ion beam and resonance ionization mass spectrometry Masato Morita, Hideki Tomita, Ryohei Ohtake, Keita Kanenari, Atsushi Nakamura, Kosuke Saito, Toshihide Kawai, Takeo Okumura, Volker Sonnenschein and Tetsuo Sakamoto Department of Applied Physics, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi, Tokyo-to, 192-0015, Japan; Department of Quantum Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi-ken, 464-8603, Japan; Japan Neutron Optics Inc., 20-5, Takeshima-cho, Gamagori-shi, Aichi-ken, 443-0031, Japan
{"title":"Development of a micro imaging system for element-selective analysis by coupling of focused ion beam and resonance ionization mass spectrometry","authors":"M. Morita, H. Tomita, Ryohei Ohtake, Keita Kanenari, Atsushi Nakamura, Kosuke Saito, Toshihide Kawai, Takeo Okumura, V. Sonnenschein, T. Sakamoto","doi":"10.15669/PNST.5.179","DOIUrl":"https://doi.org/10.15669/PNST.5.179","url":null,"abstract":"Development of a micro imaging system for element-selective analysis by coupling of focused ion beam and resonance ionization mass spectrometry Masato Morita, Hideki Tomita, Ryohei Ohtake, Keita Kanenari, Atsushi Nakamura, Kosuke Saito, Toshihide Kawai, Takeo Okumura, Volker Sonnenschein and Tetsuo Sakamoto Department of Applied Physics, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi, Tokyo-to, 192-0015, Japan; Department of Quantum Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi-ken, 464-8603, Japan; Japan Neutron Optics Inc., 20-5, Takeshima-cho, Gamagori-shi, Aichi-ken, 443-0031, Japan","PeriodicalId":20706,"journal":{"name":"Progress in Nuclear Science and Technology","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88219521","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}
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