Levels excited in the 70Ge(p, d)69Ge and 70Ge(p,t)68Ge reactions

Structure of69Ge

“…The J~ assignments of 5/2-, 1/2-, 3/2 and 3/2-for these states, respectively, have been confirmed by nuclear reaction works [-2, 3, 8] and inbeam spectroscopy works [4,6,7]. Subsequently, the state has been reported in several other works [3][4][5][6], with similar conclusions. The results of nuclear reaction works indicate that the ground state, 86.79 and 374.1 keV states in 69Ge contain substantial single neutron components of lf5/2, 2pl/2 and 2p3/2 orbitals, respectively, in their wave functions.…”

The level structure of69Ge

“…So it is rather improbable to populate this state by an (:~,n)-reaction. But we assume that the level at 1307 keV measured in the (p, d)-reaction by [3] with a spin of 1/2-, 3/2-is the missing multiplet state. A further argument for this interpretation is deduced from the small spectroscopic factor of 0.1 of the 1307 keV level [3] which agrees with the collective character of a multiplet state.…”

“…But we assume that the level at 1307 keV measured in the (p, d)-reaction by [3] with a spin of 1/2-, 3/2-is the missing multiplet state. A further argument for this interpretation is deduced from the small spectroscopic factor of 0.1 of the 1307 keV level [3] which agrees with the collective character of a multiplet state. From the center of gravity theorem follows a centroid energy of 1012keV for the 5 states which is in excellent agreement with the energy of 1 016 keV for the 2+-state in 6SGe.…”

“…Low spin states of 69Ge have been studied through the /j-decay of 69As [1] and the reactions 69Ga(p, nT) [2], :~ d) [3], and ~~ ~) [4]. From the/J-decay 4 levels with an excitation energy <400 keV were established.…”