Elsevier

Nuclear Physics A

Volume 219, Issue 1, 28 January 1974, Pages 171-189
Nuclear Physics A

“Exact” shell model calculations in A = 17 and A = 18 nuclei and effective operators in the (2s, 1d) shell

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Abstract

A shell model calculation in an enlarged space spanned by two particles in the (2s, 1d) shell and three-particle-one-hole 2h̵ω excitations is performed using the “bare” G-matrix. An effective interaction for the (2s, 1d) shell is generated and its convergence properties are investigated. It is maintained that the series converges reasonably fast in G and that the singleparticle energies used in the calculation are instrumental in this respect. This conclusion is corroborated by the E2 effective charges and B(E2) strengths that we compute for A = 17 and A = 18 nuclei respectively.

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