Nuclear Data Sheets for A = 72

Shape coexistence inSe72investigated following theβdecay ofMcCutchan1, Lister2, Ahn3 et al. 2011Phys. Rev. C212230View full textAdd to dashboardCite

“…The 0 + 2 level at 937 keV has been well established in several experiments [13]. Two independent measurements for the lifetime of the level yielded values of τ = 22.9(14) ns [6] and τ = 27.8(6) ns [16].…”

“…In a gate on the 1126-keV transition, the relative intensities of the 1137-keV and 1062-keV transitions are determined. These are compared to the intensities obtained by gating from below on the 862-keV, 2 A 2 + level at 1317 keV has been identified in both β decay and (HI,xn) reactions [13] and observed to decay to the 0 [13], where available.…”

“…862.18 (7) 100 (4) (4) 76 (5) (17) 15 (1) 35 (2) (5) 85 (6) 79 (7) (2) 33 (2) 44(7) 0 + 937.24 1434.75(9) 1.55 (16) 18(2) 13 (5) (9) a Level spin assignments are nominal assignments from the evaluation [13], except as noted.…”

“…b Literature values for branches are from the evaluated data [13]. c New spin assignment for previously observed level is given on the basis of angular correlation measurements.…”

“…have been collected and issues resolved in the most recent A = 72 compilation [13]. The parent 72 Br has a ground state of spin and parity J π = 1 + with T 1/2 = 78.6 sec and a β-decaying isomeric state with spin and parity J π = 3 − and T 1/2 = 10.6 sec.…”