Relative U 235 ( n , γ ) and <mml:mo stretchy="…
2009; American Institute of Physics; Volume: 79; Issue: 5 Linguagem: Inglês
10.1103/physrevc.79.054610
ISSN1538-4497
AutoresJ. M. Allmond, L. A. Bernstein, C. W. Beausang, L. Phair, D. L. Bleuel, J. T. Harke, Jutta Escher, K. E. Evans, B. L. Goldblum, R. Hatarik, H. B. Jeppesen, S. R. Lesher, M. A. McMahan, John Rasmussen, N. D. Scielzo, M. Wiedeking,
Tópico(s)Nuclear Physics and Applications
ResumoThe internal surrogate ratio method allows for the determination of an unknown cross section, such as $(n,\ensuremath{\gamma})$, relative to a better-known cross section, such as $(n,f)$, by measuring the relative exit-channel probabilities of a surrogate reaction that proceeds through the same compound nucleus. The validity of the internal surrogate ratio method is tested by comparing the relative $\ensuremath{\gamma}$ and fission exit-channel probabilities of a $^{236}\mathrm{U}{}^{*}$ compound nucleus, formed in the $^{235}\mathrm{U}(d,p)$ reaction, to the known $^{235}\mathrm{U}(n,\ensuremath{\gamma})$ and $(n,f)$ cross sections. A model-independent method for measuring the $\ensuremath{\gamma}$-channel yield is presented and used.
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