A Position Sensitive X-ray Spectrophotometer using Microwave Kinetic Inductance Detectors
arXiv:cond-mat/0610130 · doi:10.1063/1.2390664
Abstract
The surface impedance of a superconductor changes when energy is absorbed and Cooper pairs are broken to produce single electron (quasiparticle) excitations. This change may be sensitively measured using a thin-film resonant circuit called a microwave kinetic inductance detector (MKID). The practical application of MKIDs for photon detection requires a method of efficiently coupling the photon energy to the MKID. We present results on position sensitive X-ray detectors made by using two aluminum MKIDs on either side of a tantalum photon absorber strip. Diffusion constants, recombination times, and energy resolution are reported. MKIDs can easily be scaled into large arrays.
4 pages, 2 figures. Submitted to Applied Physics Letters, August 25, 2006
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