γ-ray, γγ-coincidence, internal conversion electron and γ-ray angular distribution spectra of the 70Ge(p,nγ) 70As reaction were measured with Ge(HP) γ and superconducting magnetic lens plus Si(Li) electron spectrometers at eight bombarding proton energies between 7.59 and 8.7 MeV. Energies and relative intensities of 113 (among them 60 new) 70As γ rays, as well as 29 new internal conversion coefficients were determined. The proposed level scheme contains 16 new levels. γ-ray branching and mixing ratios, level spin and parity values have been deduced. The spins and parities have been determined on the basis of decay properties of levels, internal conversion coefficients, Hauser-Feshbach analysis of reaction cross sections, γ-ray angular distribution and other data. The energy spectra and electromagnetic moments were calculated in the framework of the interacting boson-fermion-fermion/truncated quadrupole phonon model for odd-odd nuclei and reasonable agreement has been obtained between the experimental and theoretical results.
- Nuclear reactions
ASJC Scopus subject areas
- Nuclear and High Energy Physics