PNNL

Abstract

Ultra-high energy resolution microcalorimeter gamma-ray spectroscopy - with energy resolution 5 to 10 times higher than observed in spectra obtained by commercial-off-the-shelf high purity germanium detectors - is an enabling technology for ultra-precise isotope identification and quantification. Microcalorimeter gamma spectroscopy complements measurements requiring high-accuracy mass spectrometry, a costly, destructive analysis technique, and may offer benefits over mass spectrometry in the future. Microcalorimeter detectors are fabricated from superconducting materials, and operate at ultra-low temperatures (