Experimental study of Tc-100 beta decay with total absorption gamma-ray spectroscopy
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2017
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American Physical Society
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Abstract
The beta decay of Tc-100 has been studied by using the total absorption gamma-ray spectroscopy technique at the Ion Guide Isotope Separator On-Line facility in Jyvaskyla. In this work the new Decay Total Absorption gamma-ray Spectrometer in coincidence with a cylindrical plastic beta detector has been employed. The beta intensity to the ground state obtained from the analysis is in good agreement with previous high-resolution measurements. However, differences in the feeding to the first-excited state as well as weak feeding to a new level at high excitation energy have been deduced from this experiment. Theoretical calculations performed in the quasiparticle random-phase approximation framework are also reported. Comparison of these calculations with our measurement serves as a benchmark for calculations of the double beta decay of Mo-100.
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© 2017 American Physical Society.
Artículo firmado por más de 10 autores.
A. A. acknowledges useful discussions with Professor A. Garcia and Dr. S. Sjue during the preparation of the experimental proposal. This work has been supported by the Spanish Ministerio de Economia y Competitividad under Grants No. FPA2011-24553, No. AIC-A-2011-0696, No. FPA2014-52823-C2-1-P, No. FPA2015-65035-P, and No. FPI/BES-2014-068222, and by the program Severo Ochoa (SEV-2014-0398), by the Spanish Ministerio de Educacion, Cultura y Deporte under the FPU12/01527 Grant, by the European Commission under the FP7/EURATOM contract 605203 and the FP7/ENSAR contract 262010, and by the Junta para la Ampliacion de Estudios Programme (CSIC JAE-Doc contract) co-financed by FSE. This work has been partially supported by the Academy of Finland under the Finnish Centre of Excellence Programme 2012-2017 (Project No. 213503, Nuclear and Accelerator Based Programme at JYFL). W.G. was supported by the UK Science and Technology Facilities Council (STFC) Grant ST/F012012/1 and by the Atraccio de talent VLC-CAMPUS Programme of the University of Valencia.