Structure of Nuclei with Neutron Excess-Ca47 and K47

G. Sartoris, L. Zamick

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12 Scopus citations

Abstract

A shell-model calculation of the low-lying states of Ca47 and K47 was performed employing interaction matrix elements derived from the Hamada-Johnston potential. The configurations of Ca47 and K47 were limited to one-hole states and two-hole, one-particle states relative to a Ca48 core. The change in the single-particle energies in going from Ca40 to Ca48 is discussed. These changes were calculated by a first-order perturbation method using the Hamada-Johnston matrix elements. Of interest in K47 is the fact that the ground state has spin and parity 1/2+, whereas the corresponding value is 32+ for the other potassium isotopes. The positive-parity states of Ca47 lie at surprisingly low excitation energy, and their structure is of particular interest. The spectrum of the negative-parity states of Ca47 was also calculated, as well as spectroscopic factors for single-nucleon transfer reactions. Good agreement with experiment was obtained for the negative-parity states, but the results for the positive-parity states were not entirely satisfactory.

Original languageEnglish (US)
Pages (from-to)1035-1043
Number of pages9
JournalPhysical Review
Volume167
Issue number4
DOIs
StatePublished - 1968

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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