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Author Aoki, F. ♦ Okada, M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language Japanese
Subject Keyword CHEMISTRY ♦ ACTIVATION ANALYSIS ♦ BERYLLIUM ♦ CONFIGURATION ♦ MODERATORS ♦ NEUTRON SOURCES ♦ PARAFFIN ♦ RADIUM ♦ RHODIUM ♦ SILVER ♦ SURFACES ♦ THERMAL NEUTRONS ♦ VANADIUM
Abstract Optimum distance for a specified experimental condition is reported together with the effect of the orientation of sample surface on induced activity. The optimum distance was determined on three samples (Ags Rh, V) by use of a Ra- Be neutron source placed in a paraffin moderator. It was found that these samples were most effectively activated by the slow neutron when they were placed 1.7 plus or minus 0.1cm below the bottom of a cylindrical Ra-Be neutron source which was surrounded by a paraffin layer of more than 11cm thickness. As these elements used are considerably different in regard to the total neutron-cross- section spectrum (cross-section vs. energy), the observed optimum distance seems to apply to many other elements. (auth)
Educational Use Research
Learning Resource Type Article
Publisher Date 1959-04-01
Journal Tokyo Kogyo Shikensho Kokoku
Volume Number 54


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