Time-resolved luminescence spectra of electron-hole plasma in ion-irradiated CdS

M. Koshimizu, K. Asai, K. Kimura

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

We measured the time-resolved luminescence spectra of CdS induced by 2.0 MeV/nucleon Xe and Ar irradiation. We observed a luminescence band with a fast decay rate, and attributed it to the spontaneous luminescence of the electron-hole plasma (EHP). By analyzing the shape of this band, we obtained the carrier density and temperature of the EHP. The obtained carrier density was quite consistent with the calculated result of the excitation density or electronic stopping power. The small binding energy of the EHP, obtained in this experiment, indicates that the crystal structure does not significantly change in the ion tracks due to the weak interaction of the electrons and lattice in CdS, contrary to the case of alumina and alkali-halides.

Original languageEnglish
Pages (from-to)376-380
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume212
Issue number1-4
DOIs
Publication statusPublished - 2003 Dec
Externally publishedYes
EventAtomic Collisions in Solids - India, India
Duration: 2003 Jan 192003 Jan 24

Keywords

  • CdS
  • Electron-hole plasma
  • Swift heavy ion
  • Time-resolved luminescence

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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