Effective-interaction calculation of the energy spectra of copper isotopes

Shell-model calculations on Ni and Cu isotopes

“…The previous shell-model calculations on Cu isotopes concerned only a few nuclei [-11] or were restricted to configurations with low seniorities [10,12,13]. However, decomposition of the present wave functions shows that omission of the higher-seniority configurations is a good approximation only for the lowestlying J~=l/2 , 3/2-, 5/2-states in 61'63"65Cn, the yrast J~= 1/2--11/2 levels in 61'63Ni and the lowestlying J~=0 +, 2 +, 4 + states in 6~ In the present study the unrestricted model space (2p3,2, lJ;,2,2p1.2) with aS6Ni core has been investigated with two interactions, MSDI and ASDI.…”

“…A full-fledged and detailed shell-model calculation [111 with Kuo matrix elements in a complete (2p3/2, lf5/2 , 2pl/2 ) model space restricted to only 63'6SCu shows good agreement with experiment. Recently spectra for ss-68Cu and some spectroscopic factors have been calculated [13] in a (2p3/2, lf5/2, 2pl/2 ) space, restricted to v=0 and 2 for the odd-odd and to v= 1 and 3 for the odd-even Cu isotopes. However, with this restriction the agreement with the experimental spectroscopic factors is very poor.…”

Calculations of the energy spectra of Zn, Ga, and Ge isotopes by the shell model

“…Others have used various realistic interactions [5][6][7][8], which have been also applied to the Cu isotopes [7][8][9][10] and a few even-mass Zn isotopes [8,11,12]. The T=0 part of the empirical interaction remained less determined than the T= 1 part, though an attempt to determine some of the T=0 two-body matrix elements was made for the Cu isotopes under the restriction to low seniority states [13]. Recently Koops and Glaudemans [14] performed extensive shell model calculations for the Ni and Cu isotopes with active nucleons distributed in all possible ways over the lp3/2 , 0fs/z , and lpl/2 orbits outside an inert 56Ni core.…”