D. Hippe

High spin states in105Ag

Levels in105Ag were populated by the103Rh(α, 2nγ) reaction,γ-singles spectra,γγ-coincidences, excitation functions, angular distributions and polarisation measurements were taken. These measurements were used to construct a level-scheme and give various spin and parity assignments.Nuclear Reactions:103Rh(α, 2nγ)105Ag; measuredEγ, Iγ, γγ-coincidences, excitation functions, angular distributions, polarisation.

High spin states in77Se populated by the74Ge(α,n γ) reaction

Abstract77Se has been investigated by the reaction74Ge(α,nγ) at 14 MeV. Gamma singles spectra, gamma angular distributions and gamma-gamma coincidences have been taken. A level scheme has been established, spins and parities have been assigned. States of a rotational band on the 1/2− ground state, a rotational band on the 5/2− 249.7 keV state and an anormal band have been identified. Nuclear Reaction74Ge(α,n γ)Eα=14 MeV; measuredEγ,Iγ,γ-γ-Coin.,γ-ang. distr.77Se deduced levels,J, π. Enriched target, Ge (Li).

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).

High-spin states in99Tc

The level scheme of99Tc was studied byγ-ray spectroscopy with the96Zr(6Li, 3n γ)99Tc reaction. New levels were established and spins and parities assigned.99Tc is compared with93, 95, 97Tc, with the neighbouring even-even Mo-isotopes and with the results of an IBFM calculation.

High spin states in95Tc populated in the93Nb(α, 2nγ) reaction

The93Nb(α, 2nγ)95Tc reaction has been studied at a bombarding energy of 22.5 MeV using Ge(Li)-detectors. Gamma singles spectra, gamma-gamma coincidences, excitation functions and gamma angular distribution have been obtained. A level scheme has been constructed. Spin and parity assignments up to 29/2+ are given.

High-spin states in97Tc

The level scheme of97Tc was studied by gamma ray spectroscopy using the94Zr(6Li, 3nγ)97Tc reaction. New levels and spins and parities were established.97Tc is compared with the neighbouring even-even nucleus and with the results of an IBFM calculation.

High spin states in107Ag

Abstract107Ag hasbeen investigated by the reactions104Ru(6Li, 3nγ) and104Ru(7Li, 4ny). γ-singles spectra,γ-γ-Δt-coincidences,γ-angular distributions and polarization measurements were taken. A level scheme has been established, spins and parities have been assigned.

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).