Direct measurement of the L/K ratio in 7Be electron capture

P. A. Voytas, C. Ternovan, M. Galeazzi, D. McCammon, J. J. Kolata, P. Santi, D. Peterson, V. Guimarães, F. D. Becchetti, M. Y. Lee, T. W. O'Donnell, D. A. Roberts, S. Shaheen

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


The L/K capture ratio in decay of 7Be was measured using a cryogenic microcalorimeter. The time scale for the slowing down of the recoil 7Li in the HgTe medium was found to have a lower limit of about 210 fs. Experimental value for the L/K ratio was a factor of about 2 lower than the average existing theoretical predictions for free beryllium.

Original languageEnglish (US)
Article number012501
Pages (from-to)125011-125014
Number of pages4
JournalPhysical Review Letters
Issue number1
StatePublished - Jan 7 2002
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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