On the recombinational enhancement of ionic lines in the afterglow of a pulsed noble-gas hollow-cathode discharge

Gy Rubin, M. Jánossy, P. Mezei, P. Apai

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Strong recombination peaks were observed at He-, Ne-, and Ar-ion lines in the afterglow of a pulsed, helical hollow-cathode discharge excited by 10 Hz, 0.5-100 μs duration and 1-23 A rectangular current pulses. The intensity of the peaks depended strongly on the high-voltage leading part of the exciting pulse. An optimum was found in the peak intensity as a function of pulse length. The peaks could not be observed at pulses exceeding a certain duration. From results obtained using double-pulse excitation, the peaks are considered to be due to recombination of doubly ionized atoms produced by the high-voltage leading edge of the exciting pulse with thermal-energy electrons. Line intensity investigations using an optical resonator indicate the possibility of gain at the He II 468.6 nm transition.

Original languageEnglish
Pages (from-to)105-110
Number of pages6
JournalApplied Physics B Laser and Optics
Volume58
Issue number2
DOIs
Publication statusPublished - Feb 1 1994

Keywords

  • 42.55.1
  • 52.20
  • 52.80.-s

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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