Li 6 ( n , α ) H 3 Cross Section as a …
1956; American Institute of Physics; Volume: 103; Issue: 3 Linguagem: Inglês
10.1103/physrev.103.741
ISSN1536-6065
Autores Tópico(s)Nuclear reactor physics and engineering
ResumoThe total ${\mathrm{Li}}^{6}(n, \ensuremath{\alpha}){\mathrm{H}}^{3}$ cross section has been measured absolutely over the range of neutron energies from 0.88 to 14.1 Mev, with errors varying from 11 to 18%. At its low-energy end, the curve $\ensuremath{\sigma}({E}_{n})$ joins smoothly with an extension of the curve of earlier data of Blair and Holland, for which the maximum neutron energy was 0.62 Mev. A log-log plot of $\ensuremath{\sigma}({E}_{n})$ for the present data shows a variation approximately as ${{E}_{n}}^{\ensuremath{-}1}$ for the high-energy portion of the curve with a break to greater flatness at the lower energies, resulting in a broad hump in the cross-section curve at about 2 Mev. This hump is believed to be due to competition from deuteron-producing reactions.
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