Multiplicity counting using organic scintillators to distinguish neutron sources: An advanced teaching laboratory
| Autor: | Darby, Flynn B., Hua, Michael Y., Pakari, Oskari V., Clarke, Shaun D., Pozzi, Sara A. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | In this advanced instructional laboratory, students explore complex detection systems and nondestructive assay techniques used in the field of nuclear physics. After setting up and calibrating a neutron detection system, students carry out timing and energy deposition analyses of radiation signals. Through the timing of prompt fission neutron signals, multiplicity counting is used to carry out a special nuclear material (SNM) nondestructive assay. Our experimental setup is comprised of eight trans-stilbene organic scintillation detectors in a well-counter configuration, and measurements are taken on a spontaneous fission source as well as two ({\alpha},n) sources. By comparing each source's measured multiplicity distribution, the resulting measurements of the ({\alpha},n) sources can be distinguished from that of the spontaneous fission source. Such comparisons prevent the spoofing, i.e., intentional imitation, of a fission source by an ({\alpha},n) neutron source. This instructional laboratory is designed for nuclear engineering and physics students interested in organic scintillators, neutron sources, and nonproliferation radiation measurement techniques. Comment: 29 pages, 17 figures, pre-proof accepted to AJP, AJP number AJP22-AR-01524R2 (DOI: 10.1119/5.0139531) |
| Databáze: | arXiv |
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