Study of the $\beta$-decay of ${}^{100}$Tc with Total Absorption $\gamma$-Ray Spectroscopy

Abstract

The \b{eta}-decay of 100 Tc has been studied using the Total Absorption γ-Ray Spectroscopy technique at IGISOL. In this work the new DTAS spectrometer in coincidence with a cylindrical plastic \b{eta} detector has been employed. The \b{eta}-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 (QRPA) framework are also reported. Comparison of these calculations with our measurement serves as a benchmark for calculations of the double \b{eta}-decay of 100 Mo.

arXiv commentsubmitted to Physical Review C

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• Novel Techniques for Constraining Neutron-Capture Rates Relevant for r-Process Heavy-Element Nucleosynthesis
• Beta-decay studies for applied and basic nuclear physics
• Improving Fission-product Decay Data for Reactor Applications: Part I -- Decay Heat
• Total absorption $\gamma$-ray spectroscopy of niobium isomers
• Total absorption $\gamma$-ray spectroscopy of the $\beta$-delayed neutron emitters ${}^{137}$I and ${}^{95}$Rb
• Determination of Beta Decay Ground State Feeding of Nuclei of Importance for Reactor Applications