MEASUREMENT OF THE THERMAL NEUTRON DIFFUSION PARAMETERS OF WATER BY THE PULSED NEUTRON METHOD
Journal Article
·
· Proceedings of the Indiana Academy of Science (U.S.)
OSTI ID:4116304
Pulsed neutron techniques were used to measure diffusion parameters of thermal neutrons in water at 26 deg C. Preliminary results are 212 plus or minus 11 mu sec for the mean thermal lifetime, 36,985 plus or minus 1630 cm/sup 2/ sec/sup -1/ for the average diffusion coefficient, and 5021 plus or minus 2490 cm/sup 4/ sec/sup -1/ for the diffusion cooling coefficient. From these results the thermal absorption cross section of hydrogen and the thermal diffusion length in water are found to be 322 plus or minus 17 mb and 2.82 plus or minus 0.09 cm, respectively. Moderators with geometric bucklings ranging from 0.000 cm/sup - 2/ to 0.600 cm/sup -2/ were used for the lifetime mwasurements. Harmonic effects limit the precision of the results. (auth)
- Research Organization:
- Valparaiso Univ., Ind.
- NSA Number:
- NSA-18-009301
- OSTI ID:
- 4116304
- Journal Information:
- Proceedings of the Indiana Academy of Science (U.S.), Journal Name: Proceedings of the Indiana Academy of Science (U.S.) Vol. Vol: 72; ISSN PIACA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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