Structure of 74As from the (p,nγ) reaction and interpretation within IBFFM

A. Algora, D. Sohler, T. Fényes, Z. Gácsi, S. Brant, V. Paar

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Abstract

γ-ray, internal conversion electron, and γ-coincidence spectra of the 74Ge(p,nγ)74As reaction were measured with Ge(HP) γ-ray and superconducting magnetic lens plus Si(Li) electron spectrometers at five bombarding proton energies between 3.6 and 4.7 MeV. Energies and relative intensities of 171 (among them > 105 new) 74As γ-rays, as well as 65 (including 51 new) internal conversion coefficients have been determined. A more complete level scheme, γ-ray branching ratios, level spin and parity values have been deduced. The scheme contains 52 levels, from which 18 are new. The energy spectra and electromagnetic properties were calculated using the interacting boson-fermion-fermion model. The calculations reasonably well describe the level spectra and electromagnetic properties of 72Ge, 73As, 73Ge and 74As nuclei.

Original languageEnglish
Pages (from-to)399-430
Number of pages32
JournalNuclear Physics, Section A
Volume588
Issue number2
DOIs
Publication statusPublished - Jun 5 1995

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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