Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

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

Similar Records

THE DIFFUSION COOLING OF NEUTRONS IN FINITE MODERATOR
Journal Article · Tue Dec 31 23:00:00 EST 1957 · J. Nuclear Energy · OSTI ID:4257703

DETERMINATION OF DIFFUSION COOLING IN GRAPHITE BY MEASUREMENT OF THE AVERAGE NEUTRON VELOCITY
Technical Report · Sun Dec 31 23:00:00 EST 1961 · OSTI ID:4769166

THE DIFFUSION COOLING EFFECT IN HEAVY WATER
Journal Article · Wed Dec 31 23:00:00 EST 1958 · Arkiv Fysik · OSTI ID:4245470