Inelastic neutron scattering studies of 76Ge and 76Se: Relevance to neutrinoless double-β decay

B. P. Crider, E. E. Peters, T. J. Ross, M. T. McEllistrem, F. M. Prados-Estévez, J. M. Allmond, J. R. Vanhoy, S. W. Yates

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Inelastic neutron scattering measurements were performed at the University of Kentucky Accelerator Laboratory on enriched 76Ge and 76Se scattering samples. From measurements at incident neutron energies from 2.0 to 4.0 MeV, many new levels were identified and characterized in each nucleus; level lifetimes, transition probabilities, multipole mixing ratios, and other properties were determined. In addition, γ-ray cross sections for the 76Ge(n,n′γ) reaction were measured at neutron energies up to 5.0 MeV, with the goal of determining the cross sections of γ rays in 2040-keV region, which corresponds to the region of interest in the neutrinoless double β decay of 76Ge. Gamma rays from the three strongest branches from the 3952-keV level were observed, but the previously reported 2041-keV γ ray was not. Population cross sections across the range of incident neutron energies were determined for the 3952-keV level, resulting in a cross section of ∼0.1 mb for the 2041-keV branch using the previously determined branching ratios. Beyond this, the data from these experiments indicate that previously unreported γ rays from levels in 76Ge can be found in the 2039-keV region.

Original languageEnglish
Title of host publicationCGS15 2014 - Capture GammaRay Spectroscopy and Related Topics
EditorsKai Zuber, Ronald Schwengner
ISBN (Electronic)9782759817948
DOIs
StatePublished - May 28 2015
Event15th International Symposium on Capture Gamma Ray Spectroscopy and Related Topics, CGS15 2014 - Dresden, Germany
Duration: Aug 25 2014Aug 29 2014

Publication series

NameEPJ Web of Conferences
Volume93
ISSN (Print)2101-6275
ISSN (Electronic)2100-014X

Conference

Conference15th International Symposium on Capture Gamma Ray Spectroscopy and Related Topics, CGS15 2014
Country/TerritoryGermany
CityDresden
Period8/25/148/29/14

ASJC Scopus subject areas

  • Physics and Astronomy (all)

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