NONEQUILIBRIUM NORMAL-METAL SUPERCONDUCTING TUNNEL JUNCTION DETECTORS

Authors
AZGUI F MEARS CA LABOV SE FRANK M SADOULET B LINDEMAN M GOLWALA S HILLER LJ NETEL H
Citation
F. Azgui et al., NONEQUILIBRIUM NORMAL-METAL SUPERCONDUCTING TUNNEL JUNCTION DETECTORS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 370(1), 1996, pp. 121-123
Citations number
5
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
370
Issue
1
Year of publication
1996
Pages
121 - 123
Database
ISI
SICI code
0168-9002(1996)370:1<121:NNSTJD>2.0.ZU;2-F
Abstract
Measurements of a Normal metal-Insulating-Superconducting (NIS) tunnel junction sensor Ag/AlOx/Al coupled to a thick Pb absorber are present ed. All films were thermally deposited on a Si3N4 membrane using a sha dow-mask technique. Irradiation experiments with a Fe-55 source were p erformed using a high bandwidth SQUID with one junction only. We obser ve a strong position dependence of the pulse shape and amplitude. The different classes of events are probably related to different elements of the sensor. At a bath temperature of 80 mK we have obtained for th e main Mn K-alpha peak an energy resolution of 100 eV FWHM. We have pr eliminary evidence for absorption in the lead and efficient trapping o f the resulting quasiparticles on the NIS normal electrode.