Spins of levels in 70Ga

High spin levels in 70Ga via 68Zn(α, pnγ) 70Ga

“…Thus we assign J' = 4+ to the level as suggested by ref [8]. This state has therefore the ((n2p3/2) (vlfs/2))4+ component with a spectroscopic factor S = 0.2 [16].…”

“…We did not extract the 691 keV y-ray angular distribution because of the presence of the neutron peak in Ge detector but refs. [8,9] give J' = 2-with a component of the ((nlfs/2) (V'99/2))2-configuration for the 691 keV level [16]. [8,9].…”

“…All previous works have been summarized by K. R. Alvar et al [7]. The first spin assignments were done by M. R. Najam et al [8] by means of a y-ray study with the 7'Zn(p, ny) 70Ga reaction at Ep = 1.7-3.2 MeV. The isomerism of the J' = 4-state at 879 keV was uncovered by the same group, i.e.…”

“…In fact the 508 keV y-ray is perturbed by the 511 keV, but data from refs. [8,16] ensure the characteristics J' = 2+. We did not extract the 691 keV y-ray angular distribution because of the presence of the neutron peak in Ge detector but refs.…”

“…-M. R. Najam et al [8] gave to it a J > 4 limitation. It decays to the J' = 4-level at 879.1 keV by a L = 1 155 keV y-ray, which belongs to the yrast cascade and has a relative yield function increasing with the incident energy so we assign J = 5 to the level.…”