High Resolution Alpha Particle Spectroscopy with Cryogenic Microcalorimeters

High Resolution Alpha Particle Spectroscopy with Cryogenic Microcalorimeters

We present measurements from a novel cryogenic microcalorimeter designed to detect alpha particles. We demonstrate a spectral resolution of 4.4 keV FWHM for 5.3 MeV alpha particles from a 210 Po source. In addition, we present an alpha spectrum from a mixture of Pu isotopes demonstrating the feasibi...

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Hauptverfasser: Ullom, J.N., Horansky, R.D., Beall, J.A., Doriese, W.B., Duncan, W.D., Ferreira, L., Hilton, G.C., Irwin, K.D., Reintsema, C.D., Vale, L., Rabin, M.W., Hoover, A.S., Lamont, S.P., Rudy, C.R.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Alpha particles
alpha spectroscopy
Cryogenics
Detectors
Energy resolution
Fluctuations
Isotopes
microcalorimeter
NIST
nuclear forensics
Silicon
Spectroscopy
Temperature sensors
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Beschreibung
Zusammenfassung:We present measurements from a novel cryogenic microcalorimeter designed to detect alpha particles. We demonstrate a spectral resolution of 4.4 keV FWHM for 5.3 MeV alpha particles from a 210 Po source. In addition, we present an alpha spectrum from a mixture of Pu isotopes demonstrating the feasibility of resolving the individual contributions of 239 Pu and 240 Pu. The unmatched resolution of microcalorimeter alpha detectors will provide new capabilities for actinide analysis. We discuss potential applications and also sensor design.
ISSN:1082-3654
2577-0829
DOI:10.1109/NSSMIC.2006.354209