B10(n, t2α) and B10(n, dn'2α) Reactions for 6-20 Mev Neutrons

Details B10(n, t2α) and B10(n, dn'2α) Reactions for 6-20 Mev Neutrons B10(n, t2α) and B10(n, dn'2α) Reactions for 6-20 Mev Neutrons

Jul 1956

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1956phrv..103..328f&link_type=abstract

Physical Review, vol. 103, Issue 2, pp. 328-334

Physics

8

Scientific paper

In a set of B10-loaded C-2 emulsions exposed to eight neutron energies in the range 6-20 Mev, 1541 three-prong stars were found which were caused by either the B10(n, t2α) or the B10(n, dn'2α) reaction. The triton cross section at 14 Mev is 102+/-17 mb and decreases with increasing bombarding energy, while the deuteron cross section is 128+/-19 mb and increases slightly with energy. The triton reaction proceeds partially through the 4.61-Mev state in Li7 and partially as a three-body breakup. In the deuteron reaction the following intermediate nuclei are formed: Be9, 2.43-Mev state; Be8, ground state and possibly the 2.9-Mev level; Li7, 10.8- and 12.4-Mev levels; and Li6, 2.19-Mev level. Four examples were found of the N14(n, t3α) reaction. The feasibility of using the B10(n, t2α) reaction as a neutron monitor is discussed.

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