Nitrogen 12

Luis W. Alvarez
Phys. Rev. 75, 1815 – Published 15 June 1949
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Abstract

N12 is shown to have a half-life of 12.5±1 milliseconds, and a positron upper limit of 16.6±0.2 Mev. It is produced by the reaction C12(p,n)N12, and has a threshold proton energy of 20.0 Mev. This indicates that N12 is within about 200 kev of being unstable against proton emission. The mass of N12 is 12.0228±0.00015, and the beta-transition is allowed.

  • Received 14 February 1949

DOI:https://doi.org/10.1103/PhysRev.75.1815

©1949 American Physical Society

Authors & Affiliations

Luis W. Alvarez

  • Radiation Laboratory, University of California, Berkeley, California

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Vol. 75, Iss. 12 — June 1949

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