Electromagnetic Transitions in (1f72)3 Nuclei: Lifetimes of the Low-Lying States of Ca43

M. Bini, P. G. Bizzeti, A. M. Bizzeti Sona, and R. A. Ricci
Phys. Rev. C 6, 784 – Published 1 September 1972
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Abstract

The mean lives of the three lower levels in Ca43 have been measured with a new version of the Doppler-shift-attenuation method, using a gas as target and absorber. The reaction was Ar40(α,n)Ca43 at energies ranging from 5.5 to 8 MeV. The results for the mean lives are the following: τm=50±4, 116±5, and 66±4 psec for the 372-, 593-, and 990-keV levels, respectively. In addition, the relative intensity of γ rays from the decay of the Ca43 levels have been obtained at Eα=8 MeV. Electron-conversion measurements have also been carried out for the transitions 372→0 and 593→372 keV, which turn out to be almost pure M1.

  • Received 7 December 1971

DOI:https://doi.org/10.1103/PhysRevC.6.784

©1972 American Physical Society

Authors & Affiliations

M. Bini, P. G. Bizzeti, and A. M. Bizzeti Sona

  • Istituto di Fisica dell'Universitá, Firenze, Italy, and Istituto Nazionale di Fisica Nucleare, Firenze, Italy

R. A. Ricci

  • Istituto di Fisica dell'Universitá, Padova, Italy,
  • Laboratori Nazionali di Legnaro, Istituto Nazionale di Fisica Nucleare, Padova, Italy

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Vol. 6, Iss. 3 — September 1972

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