Nuclear data sheets for A = 62

Gamma-ray spectroscopy of62Cu

“…All the coincidences observed are reported in Table 1. Only those levels which did not appear in our previous work [2] are reported in Table 2, together with the evidence that led to their assignment. The same new levels are presented in the 62Cu partial level scheme of Fig.…”

“…1 and Table 2). The level at 1,677.5 keV certainly belongs to the doublet observed at 1,677 keV from the 59C0(~, n~)62Cu reaction [2]. On the other hand the levels at 1,679.3 and 1,682.0 keV have not been observed before and the level at 1,677.76 keV (5 + ) observed from the 6~ pnT)62Cu reaction [9] does not seem to be excited in the present reaction.…”

“…It is distinct from the Ex= 1,370.4 keV (J~ =5 +) [3] level whose decay by a 979.3 keV y-ray transition is well established [2].…”

“…It seems that the 1,142 keV 7-ray, formerly attributed [7] to the transition from this level to the ground state, would belong rather to a cascade from a higher lying level (Jongsma [8], Chouraqui [2]). We observe a 469.4 keV y-ray in coincidence with E~ =40.8, 243.4, 284.9, 431.6 keV, all related to the 675.1 keV level decay, and a 753.8 keV ray in coincidence with E~=40.8 and 349.4 keV, related to the 390.2 keV level decay.…”

“…As an odd-odd isotope of the fp shell, 62Cu presents a high level density [1,2]. The theoretical analysis of this level scheme within the framework of the shell model [3] requires a large configuration space and is restricted to low-lying levels.…”