Diffusion of long-lived quasiparticles over long distances

M. Loidl, M. Bravin, M. Bruckmayer, P. Di Stefano, T. Frank, O. Meier, P. Meunier, F. Pröbst, G. Safran, W. Seidel, I. Sergeyev, M. Sisti, L. Stodolsky, S. Uchaikin, L. Zerle

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


Diffusion of quasiparticles over distances up to 4 mm has been observed in various superconducting films. The quasiparticles were created by X-ray absorption in film strips with critical temperatures near 1 K and were detected in two superconducting phase transition thermometers at the ends of each strip. Position and energy of the absorbed X-rays as well as diffusion constants and lifetimes of the quasiparticles were determined. Very long lifetimes up to 9 ms allow the realization of large area phonon collector films on massive cryogenic particle detectors. Recently, with a first such detector a high efficiency of the phonon collection could be demonstrated.

Original languageEnglish
Pages (from-to)293-295
Number of pages3
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1
Publication statusPublished - 7 Apr 2000
Event8th International Workshop on Low Temperature Detectors (LTD-8) - Dalfsen, Neth
Duration: 15 Aug 199920 Aug 1999

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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