Back tunneling and phonon exchange effects in superconducting tunnel junction X-ray detectors

Authors
Andrianov, VA Dmitriev, PN Koshelets, VP Kozin, MG Romashkina, IL Sergeev, SA Shpinel, VS
Citation
Va. Andrianov et al., Back tunneling and phonon exchange effects in superconducting tunnel junction X-ray detectors, PHYSICA B, 263, 1999, pp. 613-616
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
263
Year of publication
1999
Pages
613 - 616
Database
ISI
SICI code
0921-4526(199903)263:<613:BTAPEE>2.0.ZU;2-R
Abstract
Superconducting tunnel junctions Nb/Al/AlOx/Nb have been studied as X-ray d etectors. The pulse height spectra and temporal pulse shapes were investiga ted for junctions of different size. Experimental consequences of quasipart icle diffusion and back tunnelling as well as 2 Delta-phonon escape are con sidered. Phonon processes can have strong influence on the tunnel detector performance leading to modification of the signal amplitude, duration and p olarity. (C) 1999 Elsevier Science B.V. All rights reserved.