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: Lasers and Optics
Volume58
Issue number2
DOIs
Publication statusPublished - Feb 1994

Fingerprint

hollow cathodes
Inert gases
afterglows
Discharge (fluid mechanics)
rare gases
Cathodes
Optical resonators
augmentation
Electric potential
pulses
Thermal energy
Atoms
Electrons
high voltages
Ions
optical resonators
leading edges
thermal energy
excitation
atoms

Keywords

  • 42.55.1
  • 52.20
  • 52.80.-s

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)
  • Engineering(all)

Cite this

On the recombinational enhancement of ionic lines in the afterglow of a pulsed noble-gas hollow-cathode discharge. / Rubin, Gy; Jánossy, M.; Mezei, P.; Apai, P.

In: Applied Physics B: Lasers and Optics, Vol. 58, No. 2, 02.1994, p. 105-110.

Research output: Contribution to journalArticle

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