Radiative Capture of Protons by F19 at a Bombarding Energy of 669 kev

J. V. Kane, R. E. Pixley, and D. H. Wilkinson
Phys. Rev. 120, 952 – Published 1 November 1960
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Abstract

The ground-state transition from the 13.51-Mev state of Ne20 formed by bombarding fluorine with protons of 669 kev is anomalously weak. This is interesting because the 13.51-Mev state has a large reduced width for proton emission to the ground state of F19 and a large M1 width for radiation to the first excited (1.63-Mev) state of Ne20. A simple explanation would be that the ground state of Ne20 is close to (2s12)4. The ground-state radiation is sought and found using a 3-in.×3-in. NaI(Tl) crystal. The radiative width is approximately 1.0×102 ev corresponding to |M|22×104. The 13.51-Mev state is found also to radiate to the 4.97-Mev state with a width of approximately 0.24 ev. The 4.97-Mev state itself chiefly cascades via the first excited state: An upper limit on the relative strength of the ground-state transition is 0.07.

  • Received 13 June 1960

DOI:https://doi.org/10.1103/PhysRev.120.952

©1960 American Physical Society

Authors & Affiliations

J. V. Kane, R. E. Pixley, and D. H. Wilkinson*

  • Brookhaven National Laboratory, Upton, New York

  • *Permanent address: Clarendon Laboratory, Oxford, England.

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Issue

Vol. 120, Iss. 3 — November 1960

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