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

Abstract

Abstract. The 93Nb(cr 2nT)gSTc reaction has been studied at a bombarding energy of 22.5 MeV using Ge(Li)-detectors. Gamma singles spectra, gamma-gamma coincidences, excitation functions and gamma angular distribution have been obtained. A level scheme has been constructed. Spin and parity assignments up to 29/2 + are given.

High-spin states in97Tc

“…The energy of the 19/2 + state is 200 keV less than that of the 21/2 + state. This behaviour can also be found in 95Tc [8].…”

“…There exist also quasi-particle phonon coupling [41 and core-coupling calculations [5]. Whereas 93Tc [6,7] and 9STc [8][9][10][11][12] have been studied extensively, until now few experimental data are available for 97Tc and 99Tc and they concern only levels with spins J< 13/2 [13][14][15][16][17].…”

High-spin states in99Tc

“…Odd A Tc isotopes have been the subject of many experimental [1][2][3][4][5][6][7][8][9][10][11][12][13] and theoretical [14][15][16][17] investigations. With Z=43 they are situated between the semiclosed Z = 40 and the closed Z = 50 shells which is the reason for interesting multiparticle excitations.…”

“….& Comparison of the cascades in odd Tc isotopes[1,3,6,18]. The widths of the lines are related to their intensities and are normalized to the 13/2 + ~9/2 + transitions.…”