THE DIFFUSION COOLING PHENOMENON IN NON STATIONARY NEUTRON MIGRATION (in Polish)
Journal Article
·
· Postepy Tech. Jadrowej
OSTI ID:4810177
In interpreting diffusion measurements carried out with the impulse method, it was discovered that the effective coefficient of diffusion in a finite medium was different from the zero buckling case. The effect is the establishment of a neutron temperature, in dynamic equilibrium with the medium, that is lower than the temperature of the medium. This phenomenon of diffusion cooling is reviewed. The re view begins with the phenomenological theory of von Dardel, followed by a discussion of the role of the coefficient of diffusion cooling in impulse measurements. Both the early theory of Nelkin and his newer theory are presented. The cross section for energy transfer is discussed. After a presentation of experimental results on diffusion coefficients obtained in impulse type measurements, the monatomic heavy gas model and the heavy crystalline model of a moderator are discussed. (TTT)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-16-022981
- OSTI ID:
- 4810177
- Report Number(s):
- PAEC-RR-3
- Journal Information:
- Postepy Tech. Jadrowej, Journal Name: Postepy Tech. Jadrowej Vol. Vol: No. 2
- Country of Publication:
- Country unknown/Code not available
- Language:
- Polish
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