Gamma-ray spectrometers using a bulk Sn absorber coupled to a Mo/Cu multilayer superconducting transition edge sensor

Abstract We are developing gamma-ray detectors with a bulk absorber and a superconducting transition-edge sensor. The absorber is high-purity Sn and the transition-edge sensor is a Mo/Cu multilayer thin film. We have characterized the detector, and will discuss X- and gamma-ray results.