Total absorption spectroscopy is a technique that helps obtain reliable β-feeding patterns of complex decays important for nuclear structure and astrophysics modeling as well as decay heat analysis in nuclear reactors. The need for improved measurements of β-feeding patterns from fission decay products has come to the forefront of experiments that use nuclear reactors as a source of antineutrinos. Here we present more detailed results, in particular the β-decay measurements of 96gsY, and demonstrate the impact of the β-delayed γ multiplicity on the overall efficiency of Modular Total Absorption Spectrometer used at Oak Ridge National Laboratory to study the decays of fission products abundant during a nuclear fuel cycle.
Publication Source (Journal or Book title)
Acta Physica Polonica B
Rasco, B., Fijałkowska, A., Rykaczewski, K., Wolińska-Cichocka, M., Karny, M., Grzywacz, R., Goetz, K., Gross, C., Stracenerb, D., Zganjar, E., Batchelder, J., Blackmon, J., Brewer, N., King, T., Miernik, K., Paulauskas, S., Rajabali, M., & Winger, J. (2017). βdecays of 92Rb, 96gsY, and 142Cs measured with the modular total absorption spectrometer and the influence of multiplicity on total absorption spectrometry measurements. Acta Physica Polonica B, 48 (3), 507-515. https://doi.org/10.5506/APhysPolB.48.507