Triton-emission cross sections with 30 MeV d(Be) break-up neutrons

Details Triton-emission cross sections with 30 MeV d(Be) break-up neutrons Triton-emission cross sections with 30 MeV d(Be) break-up neutrons

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nupha.423..130w&link_type=abstract

Nuclear Physics A, Volume 423, Issue 1, p. 130-138.

Physics

Nuclear Physics

4

Nuclear Reactions

Scientific paper

Triton-emission cross sections were measured for Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo, Ag, Ta, Tl, Pb and Bi with a 30 MeV d(Be) break-up neutron spectrum characterized by a multiple-foil activation technique. The accumulated tritium was separated by vacuum extraction and measured by low-level gas-phase β- counting. The systematic trend in the cross sections is somewhat similar to that in the 53 MeV d(Be) break-up neutron spectrum; apart from some initial decrease as a function of Z, the cross section is almost constant over the entire range of Z = 22 to 83. The magnitudes of the cross sections lie between those with 14 MeV neutrons and 53 MeV d(Be) break-up neutrons. Hauser-Feshbach calculations show that the statistical model describes the triton-emission cross sections for nuclei in the (2s, ld) shell within a factor of 2; for the heavier nuclei, however, the calculated cross sections are much smaller than the experimental values.

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