Activation analysis of targets and lead in a lead slowing down spectrometer system
A neutron generation system was developed to induce fissile fission in a lead slowing down spectrometer (LSDS) system. The source neutron is one of the key factors for LSDS system work. The LSDS was developed to quantify the isotopic contents of fissile materials in spent nuclear fuel and recycled f...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-02-01
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| Series: | Nuclear Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573317303005 |
| _version_ | 1818130802985140224 |
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| author | Yongdeok Lee Jeong Dong Kim Seong Kyu Ahn Chang Je Park |
| author_facet | Yongdeok Lee Jeong Dong Kim Seong Kyu Ahn Chang Je Park |
| author_sort | Yongdeok Lee |
| collection | DOAJ |
| description | A neutron generation system was developed to induce fissile fission in a lead slowing down spectrometer (LSDS) system. The source neutron is one of the key factors for LSDS system work. The LSDS was developed to quantify the isotopic contents of fissile materials in spent nuclear fuel and recycled fuel. The source neutron is produced at a multilayered target by the (e,γ)(γ,n) reaction and slowed down at the lead medium. Activation analysis of the target materials is necessary to estimate the lifetime, durability, and safety of the target system. The CINDER90 code was used for the activation analysis, and it can involve three-dimensional geometry, position dependent neutron flux, and multigroup cross-section libraries. Several sensitivity calculations for a metal target with different geometries, materials, and coolants were done to achieve a high neutron generation rate and a low activation characteristic. Based on the results of the activation analysis, tantalum was chosen as a target material due to its better activation characteristics, and helium gas was suggested as a coolant. In addition, activation in a lead medium was performed. After a distance of 55 cm from the lead surface to the neutron incidence, the neutron intensity dramatically decreased; this result indicates very low activation. |
| first_indexed | 2024-12-11T08:10:50Z |
| format | Article |
| id | doaj.art-4ebce90ad8a44252af81211bca351947 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-12-11T08:10:50Z |
| publishDate | 2018-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-4ebce90ad8a44252af81211bca3519472022-12-22T01:14:54ZengElsevierNuclear Engineering and Technology1738-57332018-02-0150118218910.1016/j.net.2017.11.002Activation analysis of targets and lead in a lead slowing down spectrometer systemYongdeok Lee0Jeong Dong Kim1Seong Kyu Ahn2Chang Je Park3Fuel Cycle Strategy Development Division, Korea Atomic Energy Research Institute, Daedeok-Daero 1045, Yuseong, Daejeon, 305-353, South KoreaDepartment of Nuclear Engineering, Sejong University, Neungdong-ro 209, Gwangjin-gu, Seoul, South KoreaFuel Cycle Strategy Development Division, Korea Atomic Energy Research Institute, Daedeok-Daero 1045, Yuseong, Daejeon, 305-353, South KoreaDepartment of Nuclear Engineering, Sejong University, Neungdong-ro 209, Gwangjin-gu, Seoul, South KoreaA neutron generation system was developed to induce fissile fission in a lead slowing down spectrometer (LSDS) system. The source neutron is one of the key factors for LSDS system work. The LSDS was developed to quantify the isotopic contents of fissile materials in spent nuclear fuel and recycled fuel. The source neutron is produced at a multilayered target by the (e,γ)(γ,n) reaction and slowed down at the lead medium. Activation analysis of the target materials is necessary to estimate the lifetime, durability, and safety of the target system. The CINDER90 code was used for the activation analysis, and it can involve three-dimensional geometry, position dependent neutron flux, and multigroup cross-section libraries. Several sensitivity calculations for a metal target with different geometries, materials, and coolants were done to achieve a high neutron generation rate and a low activation characteristic. Based on the results of the activation analysis, tantalum was chosen as a target material due to its better activation characteristics, and helium gas was suggested as a coolant. In addition, activation in a lead medium was performed. After a distance of 55 cm from the lead surface to the neutron incidence, the neutron intensity dramatically decreased; this result indicates very low activation.http://www.sciencedirect.com/science/article/pii/S1738573317303005Activation AnalysisCINDER90Neutron SourceNeutron Slowing DownSensitivity |
| spellingShingle | Yongdeok Lee Jeong Dong Kim Seong Kyu Ahn Chang Je Park Activation analysis of targets and lead in a lead slowing down spectrometer system Nuclear Engineering and Technology Activation Analysis CINDER90 Neutron Source Neutron Slowing Down Sensitivity |
| title | Activation analysis of targets and lead in a lead slowing down spectrometer system |
| title_full | Activation analysis of targets and lead in a lead slowing down spectrometer system |
| title_fullStr | Activation analysis of targets and lead in a lead slowing down spectrometer system |
| title_full_unstemmed | Activation analysis of targets and lead in a lead slowing down spectrometer system |
| title_short | Activation analysis of targets and lead in a lead slowing down spectrometer system |
| title_sort | activation analysis of targets and lead in a lead slowing down spectrometer system |
| topic | Activation Analysis CINDER90 Neutron Source Neutron Slowing Down Sensitivity |
| url | http://www.sciencedirect.com/science/article/pii/S1738573317303005 |
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