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A superconductive junction detector as an energy proportional counter

1991; Elsevier BV; Volume: 23; Issue: 1 Linguagem: Inglês

10.1016/0920-5632(91)90081-o

1873-3832

A. Di Chiara, B. I. Ivlev, G. Peluso, Giovanni Piero Pepe, U. Scotti di Uccio,

Superconductivity in MgB2 and Alloys

A model to describe the linear regime in a Superconducting Tunnel Junction detector has been developed. In the limit of low temperatures, the only effective processes which involve quasi-particles and phonons are the phonon scattering mechanisms and the phonon escape from the area of the detector. The response of the STJ is linear if τesc−1>;τph−1 for low energy phonons and τesc−1<τph−1 for high energy phonons. The estimate of the mean energy loss ϵ by radiation per excess quasi-particle in the STJ is in agreement with previous determinations. A comparison with some experimental results taken from literature has been produced.