Heat pulse studies of quasiparticle dynamics in superconducting tunnel junction photon detectors.

Steele, A. C. and Boyd, P. and Kozorezov, A. G. and Wigmore, J. K. and Bradley, D. Ian (2002) Heat pulse studies of quasiparticle dynamics in superconducting tunnel junction photon detectors. Physica B: Condensed Matter, 316-31 (1). pp. 583-585. ISSN 0921-4526

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Abstract

We describe experiments to characterise the responsivity of superconducting tunnel junction (STJ) X-ray detectors in which the absorbed photons were simulated by heat pulses. Independent values of tunnel and loss times could be inferred from the time variation of the STJ current, whilst its integration gave the total charge output. The effects of self-recombination and trapped magnetic flux could also be determined. Results were obtained at 1.3 K for a Nb STJ, and at 20 mK for a Ta device.

Item Type:
Journal Article
Journal or Publication Title:
Physica B: Condensed Matter
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2500/2504
Subjects:
?? superconducting tunnel junctionsphoton detectorsflux trappingheat pulseselectronic, optical and magnetic materialselectrical and electronic engineeringcondensed matter physicsqc physics ??
ID Code:
23543
Deposited By:
Deposited On:
03 Feb 2009 11:53
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Jul 2024 10:17