Proton Transfers in the Nitrogen-Boron System at 27.5 Mev

E. Newman
Phys. Rev. 125, 600 – Published 15 January 1962
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Abstract

The proton transfer reactions, (1) B10(N14,O15)Be9, (2) B10(N14,C13)C11, and (3) B11(N14,C13)C12, leaving the reaction products in their ground states were investigated at a mean energy of the incident nitrogen ions of 27.5 Mev. To distinguish these reactions from other events, the two product particles were detected in coincidence by silicon surface-barrier counters. In addition, a proportional counter imposed the requirement that the observed particle have the correct charge. Angular distributions (1) and (2) peak at r02.2 fermis when plotted as dσdRmin vs r0, where Rmin is the distance of closest approach for a Rutherford orbit and r0=Rmin(A113+A213). The total ground-state cross sections were determined to be (1) 1.34±0.30 mb, (2) 2.19±0.49 mb, and (3) less than 0.3 mb. The data are compared with the predictions of the tunneling theory, and good agreement is found for the initial rise of the angular distribution.

  • Received 5 September 1961

DOI:https://doi.org/10.1103/PhysRev.125.600

©1962 American Physical Society

Authors & Affiliations

E. Newman*

  • Oak Ridge National Laboratory, Oak Ridge, Tennessee

  • *Operated for the U. S. Atomic Energy Commission by Union Carbide Corporation.

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Issue

Vol. 125, Iss. 2 — January 1962

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