Shell-Model Analysis of the Excited States of He4

P. P. Szydlix
Phys. Rev. C 1, 146 – Published 1 January 1970
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Abstract

Using a theory previously developed for the O16 nucleus, the energy levels of He4 were calculated using the nuclear shell model and the random-phase approximation (RPA). Though no attempt was made to optimize the parameters of the calculation, the predicted energies of the excited states compare favorably with those determined from experimental analyses. Qualitative agreement with experiment is obtained for the calculated electron inelastic-scattering form factor to the first 0+ excited state and for the integrated photoabsorption cross section. However, the prediction of the majority of the E1 strength in the higher of the 1—, T=1 levels does not conform to most experiments which indicate the lower level to have the stronger P11 component. The RPA produces some improvement over an ordinary shell-model calculation by decreasing the energies of the lower excited states by several hundred keV and by increasing the relative E1 strength of the lower 1—, T=1 level.

  • Received 8 September 1969

DOI:https://doi.org/10.1103/PhysRevC.1.146

©1970 American Physical Society

Authors & Affiliations

P. P. Szydlix

  • Department of Physics, State University College, Plattsburgh, New York 12901

Comments & Replies

Shell-Model Study of He4 with Realistic Forces

P. P. Szydlik, J. R. Borysowicz, and R. F. Wagner
Phys. Rev. C 6, 1902 (1972)

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Vol. 1, Iss. 1 — January 1970

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