W. Schuh

High-spin states in112Cd from the110Pd(α, 2n γ)-reaction

AbstractThe decay scheme of112Cd has been studied by γ-ray spectroscopy with the110Pd(α, 2nγ) reaction. Spin and parity assignments were made on the basis of coincidence measurements, angular distributions and excitation functions. Twelve new energy levels were established. A vibrational-like positive-parity band up to spin 8+ and a negativeparity side band 5−, (7−), (9−) were found. For the negative-parity states a (vj, vh11/2) configuration is suggested. Nuclear Reactions:110Pd(α,2nγ),Eα=15–22.5 MeV; measuredEγ,Eγ, (E,Eγ),Eγ (θ),γ-γ- coincidence;112Cd deduced levels,J; enriched target.

High spin states in73Se observed by the reaction70Ge(α,nγ)

Abstract73Se has been investigated by the reaction70Ge(α, nγ). Gamma excitation functions (Eα=10–16 MeV), gamma angular distributions (Eα=18 MeV) and gamma-gamma coincidences (Eα=15 MeV)) have been taken. A level scheme has been established, spins and partities have been assigned. States of a rotational band on the 151.2 keV (5/2−) state and an anomalous band have been identified.Nuclear Reaction70Ge(α,nγ)Eα=15 and 18 MeV; measuredEγ,Iγ,γ-γ-coin.,γ-angular distribution,γ-excitation function.73Se deduced levels,J, π. Enriched target, Ge(Li).

79Se investigated by the reaction76Ge(α, nγ)

Abstract79Se has been investigated by the reaction76Ge(α, nγ). Gamma excitation functions (Eα=10−15 MeV), gamma angular distributions and gamma-gamma coincidences (both at (Eα=12 MeV), have been taken. A level scheme has been established, spins and partities have been assigned. The results are compared with rotational bands in neighbouring odd Se isotopes.Nuclear reaction76Ge(α, nγ)Eα=12 MeV; measuredEγ,Iγ,γ-γ coincidences,γ-angular distribution,γ-excitation function.79Se deduced levels,J, π. Enriched target, Ge(Li).