Position sensitive x-ray spectrophotometer using microwave kinetic inductance detectors
Applied Physics Letters2006Vol. 89(22)
Citations Over TimeTop 10% of 2006 papers
Benjamin A. Mazin, B. Bumble, Peter K. Day, Megan E. Eckart, S. R. Golwala, J. Žmuidzinas, Fiona A. Harrison
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. The authors 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.
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