Impacts of Updated Mo-106 and Tc-106 Beta Decay Data

Nuclear beta decay is an area of ongoing research. Many fission isotopes have data from the National Nuclear Data Center (NNDC) that is based on experiments from over 30 years ago. Advancements in total absorption spectroscopy (TAS) have allowed for more complete knowledge of the beta decay feeding patterns of isotopes. This research looks at analysis of two fission fragments, Mo-106 and Tc-106, with cumulative fission yields of 1.92% and 3.89% for Pu-239 nuclear fuel. Experimental data for these two isotopes was obtained at Argonne National Laboratory (ANL) at the Californium Rare Isotope Breeder Upgrade (CARIBU) facility. This presentation discusses the method of analyzing the experimental data, as well as presenting the updated beta feeding intensities. Multiple new levels were discovered, as well as many pseudolevels representing tightly spaced levels at high energy. This work was done as part of the MTAS collaboration.