Baruch Rosner

Study of the 86Kr(d, t)85Kr and 86Kr(d, d′)86Kr reactions

Abstract Low-lying levels of 85Kr and 86Kr were studied by the 86Kr(d, t) and 86Kr(d, d′) reactions. The outgoing tritons and scattered deuterons were simultaneously detected using solid state detectors, in a particle identification arrangement. Angular distribution of the reaction products were taken between 20° and 90°. Many new levels in 85Kr were observed and a ln = 1 angular momentum transfer was assigned to the transition leading to the 1.12 MeV state. Six energy levels up to excitation energy of 3.5 MeV were observed in 86Kr. The first 2+ state in 86Kr was found to be at 1.56 MeV. A comparison between the level structure obtained in this work and the proposed decay scheme of 86Br is discussed.

Doublet structure of the first excited state of 71As

Abstract The possible multiplet structure of the first-excited state of 71 As has been investigated by the high resolution 70 Ge( 3 He, dγ) reaction and the γ-rays emitted in the decay of 71 Se. Both studies reveal a doublet at 143.2 keV and 147.3 keV excitation energies. The existence of this doublet in 71 As brings the low-lying level structure in better resemblance to the heavier odd- A arsenic isotopes.