Gamma-Ray Widths in C13, Li6, and P31

V. K. Rasmussen and C. P. Swann
Phys. Rev. 183, 918 – Published 20 July 1969
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Abstract

The width of the 3.68-MeV level of C13 has been measured and found to be Γ=0.44±0.04 eV. After correction for the E3 dependence, this is 0.59 times as strong as the mirror transition in N13, in agreement with Morpurgo's prediction of approximate equality for M1, ΔT=0 transitions in mirror nuclei. The C13 width was obtained from a comparison of the resonant scattering of bremsstrahlung by C13 with that by the 3.51-MeV level of P31 and the 3.56-MeV level of Li6. The widths of the P31 and Li6 levels were measured in self-absorption experiments, and found to be 52±8 meV and 8.1±0.5 eV, respectively. A limit on the energetically allowed but spin- and parity-forbidden decay of the Li6 level to α+d was established as Γαd<1.3 eV.

  • Received 24 February 1969

DOI:https://doi.org/10.1103/PhysRev.183.918

©1969 American Physical Society

Authors & Affiliations

V. K. Rasmussen and C. P. Swann

  • Bartol Research Foundation of The Franklin Institute, Swarthmore, Pennsylvania 19081

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Issue

Vol. 183, Iss. 4 — July 1969

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