Position sensitive x-ray spectrophotometer using microwave kinetic inductance detectors
- 27 November 2006
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 89 (22), 222507
- https://doi.org/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 inductancedetector (MKID). The practical application of MKIDs for photondetection requires a method of efficiently coupling the photon energy to the MKID. The authors present results on position sensitive x-ray detectors made by using two aluminum MKIDs on either side of a tantalumphoton absorber strip. Diffusion constants, recombination times, and energy resolution are reported. MKIDs can easily be scaled into large arrays.Keywords
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