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.
|Журнал||Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|
|Состояние||Опубликовано - 7 апр 2000|
|Событие||8th International Workshop on Low Temperature Detectors (LTD-8) - Dalfsen, Neth|
Продолжительность: 15 авг 1999 → 20 авг 1999
ASJC Scopus subject areas
- Nuclear and High Energy Physics