F-center formation by Br K-hole Auger decay in KBr

Mihiro Yanagihara, Shoichi Hirota, Yasuhiro Kondo

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Spectral dependence of the F-center formation efficiency has been measured for KBr single crystals at liquid-helium and nitrogen temperatures in the vicinity of the K edge of bromine at 13.47 keV. The F-center formation efficiency was evaluated by the optical absorption measurement under irradiation with monochromatized synchrotron x rays. The efficiency was normalized to the deposited x-ray energy estimated by a sensitive photocalorimetric measurement. It has been found that the F-center formation efficiency shows an ∼24% stepwise increase above the core threshold at liquid-helium temperature. This result suggests that the multiple ionization mechanism, following the core-hole Auger cascade, might participate actively in the F-center formation process.

Original languageEnglish
Pages (from-to)13386-13392
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume53
Issue number20
DOIs
Publication statusPublished - 1996 Jan 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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