Speaker
Spencer Fretwell
(Colorado School of Mines)
Description
The nuclear broadening of the BeEST spectrum as a result of materials effects is poorly constrained. While a precise model of the recoil of dopant radioisotopes in a superconductor such as tantalum and the resulting quasiparticle dynamics in an STJ are challenging, measuring this effect in analogous aluminum-based STJs provides an experimental comparison of this effect. This talk will discuss the ongoing effort to analyze data collected from aluminum STJs which may offer insight into the differences within the spectral response of recoiling 7Be in tantalum and aluminum STJs.
Author
Spencer Fretwell
(Colorado School of Mines)