High-spin states in the N = 50 isotones 91Nb and 93Tc populated in (α, p2nγ) reactions

High spin states in95Tc populated in the93Nb(?, 2n?) reaction

“…So the 882keV transition should not lead to the 1/2-but to the 9/2 + level. The strongest line in the spectrum of the 92Mo(cz, p2 n 7)93Tc reaction is the 13/2+-~9/2 + transition, too [4]. So we follow Shibata et al [5] and Sarantites et al [6] and assign also J~= 13/2 + to the 882 keV level.…”

“…A clean test of such models should now be possible by studying the positive parity states in the various Tc isotopes. In 93Tc, which has been studied by Grecescu et al [4] one has a pure (g9 2) 3 proton configuration. In 95Tc, which is studied in the present work, we have the interplay between the (g9.2) 3 proton configuration and the phonon states coming from the neutrons outside the N=50 core.…”

Gaps in the yrast level structure of theN=50 isotonesTc93,RuRoth1, Arnell2, Foltescu3 et al. 1994Phys. Rev. CSelf Cite5115312View full textAdd to dashboardCite

“…The investigation also gives the possibility to compare the experimental structure with recent calculations using a model restricted to pz/2, ps/2, fs/2, g9/2 configurations and a Sn core [14]. Up to the present work the following experimental information was available on the N=50 isotones mentioned above: Grecescu et al [18] used the 92Mo(n, 2pn) reaction in a study of 93Tc and reported an yrast sequence up to a 2 state. Brown et al.…”

Shell model study of high spin states in theN=50 nucleus93Tc

“…Grecescu et al [4] had proposed a spin-parity assignment of 17/2-for the 14.6 gs isomeric level in 93Tc and had given it a tentative energy assignment of 2215 keV. They had observed a delayed 69 keV transition which they had placed below the isomeric level.…”