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Measurements of pseudo-decay-constants of trapped neutrons in small graphite systems at 77 and 194.DEG.K.
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- KAWAKITA Takashi
- Department of Nuclear Engineering, Faculty of Engineering, Osaka University Mitsubishi Atomic Power Industry
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- TAKAHASHI Akito
- Department of Nuclear Engineering, Faculty of Engineering, Osaka University
Bibliographic Information
- Other Title
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- Measurements of Pseudo-Decay-Constants of Trapped Neutrons in Small Graphite Systems at 77 and 194°K
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Description
Neutron pulse die-away experiments for small graphite assemblies by using a pulsed "cold" neutron source technique were carried out for the purpose to measure the pseudo-decay-constants of trapped neutrons at the lowest Bragg-peak energy EB of coherent scattering in graphite, and also to estimate the temperature dependence of inelastic. scattering cross section of neutrons at EB. Experiments were carried out for 77 and 194°K graphite systems with dimensions from 40 x 40 x 40 cm3 to 30 x 30 x 20 cm3.<BR>The experimentally determined pseudo-decay-constants showed distinct temperature dependence and good agreement with the theoretical inelastic scattering cross sections by Young-Koppel model of phonon frequency distribution of graphite at these low temperatures.
Journal
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- Journal of Nuclear Science and Technology
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Journal of Nuclear Science and Technology 13 (10), 555-565, 1976
Atomic Energy Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001204098431872
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- NII Article ID
- 130000829397
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- COI
- 1:CAS:528:DyaE2sXkvVequg%3D%3D
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- ISSN
- 18811248
- 00223131
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed