Nuclear Energy Levels in Isotopes of Potassium

Vance L. Sailor
Phys. Rev. 77, 794 – Published 15 March 1950
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Abstract

Targets made from the separated isotopes K39 and K41 were bombarded by 3.90-Mev deuterons, and protons from the nuclear reactions K39(d,p)K40 and K41(d,p)K42 were observed. The energy distribution of the protons emitted in each reaction was obtained by measuring the proton yield as a function of range. The ground state Q-value for K39(d,p)K40 was found to be 5.48±0.08 Mev, giving the mass difference K40-K39 = 1.00070±0.00007 mass units. Excited states of K40 were found at 0.81, 2.01, 2.56, 3.3, 3.7, 4.2, and 4.8 Mev. The ground state Q-value for K41(d,p)K42 was 5.12±0.10 Mev, giving the mass difference K42-K41 = 1.00109±0.00010 mass units. Excited states of K42 were found at 0.62, 1.18, 1.97, and 2.29 Mev.

  • Received 25 November 1949

DOI:https://doi.org/10.1103/PhysRev.77.794

©1950 American Physical Society

Authors & Affiliations

Vance L. Sailor*,†

  • Sloane Physics Laboratory, Yale University, New Haven, Connecticut

  • *Now at Brookhaven National Laboratory, Upton, Long Island, New York.
  • Assisted by the Joint Program of the ONR and the AEC.

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Issue

Vol. 77, Iss. 6 — March 1950

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