The persistence of long living quasiparticles created in the energy thermalization process can affect the performances of a thermal X-ray microcalorimeter with superconducting absorber. Numerical simulations indicate that in an ab- sorber made of high-purity Sn, operated at temperatures lower than 100 mK, up to 60% of the deposited energy can remain trapped in the quasiparticle system for a time much longer than the time scale of the thermal sensor response, producing a reduction of the SNR of the detector. Other pure superconductors can present the same problem and therefore a microscopic analysis of the physical properties can be useful to identify suitable absorbing materials and optimize the detector performances.

PERINATI E, BARBERA M, SERIO S, & SILVER E (2004). Thermalization efficiency of superconducting absorbers for thermal X-ray microcalorimeters. PHYSICA. C, SUPERCONDUCTIVITY, 408, 820-821 [10.1016/j.physc.2004.03.145].

Thermalization efficiency of superconducting absorbers for thermal X-ray microcalorimeters

BARBERA, Marco;
2004

Abstract

The persistence of long living quasiparticles created in the energy thermalization process can affect the performances of a thermal X-ray microcalorimeter with superconducting absorber. Numerical simulations indicate that in an ab- sorber made of high-purity Sn, operated at temperatures lower than 100 mK, up to 60% of the deposited energy can remain trapped in the quasiparticle system for a time much longer than the time scale of the thermal sensor response, producing a reduction of the SNR of the detector. Other pure superconductors can present the same problem and therefore a microscopic analysis of the physical properties can be useful to identify suitable absorbing materials and optimize the detector performances.
PERINATI E, BARBERA M, SERIO S, & SILVER E (2004). Thermalization efficiency of superconducting absorbers for thermal X-ray microcalorimeters. PHYSICA. C, SUPERCONDUCTIVITY, 408, 820-821 [10.1016/j.physc.2004.03.145].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/19916
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