TITLE

Superconducting calorimetric alpha particle sensors for nuclear nonproliferation applications

AUTHOR(S)
Horansky, Robert D.; Ullom, Joel N.; Beall, James A.; Hilton, Gene C.; Irwin, Kent D.; Dry, Donald E.; Hastings, Elizabeth P.; Lamont, Stephen P.; Rudy, Clifford R.; Rabin, Michael W.
PUB. DATE
September 2008
SOURCE
Applied Physics Letters;9/22/2008, Vol. 93 Issue 12, p123504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Identification of trace nuclear materials is usually accomplished by alpha spectrometry. Current detectors cannot distinguish critical elements and isotopes. We have developed a detector called a microcalorimeter, which achieves a resolution of 1.06 keV for 5.3 MeV alphas, the highest resolving power of any energy dispersive measurement. With this exquisite resolution, we can unambiguously identify the 240Pu/239Pu ratio in Pu, a critical measurement for ascertaining the intended use of nuclear material. Furthermore, we have made a direct measurement of the 209Po ground state decay.
ACCESSION #
34647418

 

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