Author/Authors :
Loidl، نويسنده , , M and Bravin، نويسنده , , G and Bruckmayer، نويسنده , , M and Stefano، نويسنده , , P.Di and Frank، نويسنده , , T and Meier، نويسنده , , O and Meunier، نويسنده , , P and Prِbst، نويسنده , , F and Safran، نويسنده , , G and Seidel، نويسنده , , W and Sergeyev، نويسنده , , I and Sisti، نويسنده , , M and Stodolsky، نويسنده , , L and Uchaikin، نويسنده , , S and Zerle، نويسنده , , L، نويسنده ,
Abstract :
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.
