Disintegration of Boron by Fast Neutrons

B. Petree, C. H. Johnson, and D. W. Miller
Phys. Rev. 83, 1148 – Published 15 September 1951
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Abstract

The cross section for the B10(n,α) reaction was measured as a function of neutron energy from 0.35 to 2.6 Mev. The cross section was found to lie below the 1v extrapolation of the thermal cross section except at a peak observed at 1.9 Mev. This peak has a width of about 400 kev and a maximum value of 0.53 barn. The total variation of the cross section at the peak is 0.35 barn. The ratio of the number of disintegrations leading to the ground state of Li7 to the number leading to the excited state increases smoothly from 0.2 at 0.35 Mev to a maximum of 2.3 at 1.9 Mev, and decreases again to 0.8 at 2.6 Mev.

  • Received 31 May 1951

DOI:https://doi.org/10.1103/PhysRev.83.1148

©1951 American Physical Society

Authors & Affiliations

B. Petree*, C. H. Johnson, and D. W. Miller

  • University of Wisconsin, Madison, Wisconsin

  • *Now at National Bureau of Standards, Washington, D. C.
  • Now at Oak Ridge National Laboratory, Oak Ridge, Tennessee.
  • AEC Predoctoral Fellow.

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Issue

Vol. 83, Iss. 6 — September 1951

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