Absorption in the Near-Ultraviolet Wing of the Kr2F* (410 nm) Band

J. G. Eden, L. J. Palumbo

Research output: Contribution to journalArticle

Abstract

An intracavity laser technique has been used to study the absorption of electron-beam pumped Ne/Kr/F2. gas mixtures (196 and 300 K) in the “blue wing” of the Kr2F* emission continuum. The experiments were conducted at 358 nm using the v’ = 0 -+ v” = 1 transition of the N2 (C →B) laser. Comparing the results with the predictions of a computer model, the species primarily responsible for absorption have been identified as Ne2+, Kr2+, and Kr2F*. The photoabsorption cross sections for Ne”1 and Kr2F* (Kr2+F-) at 358 nm have been estimated to be 8.1. 10-19 and 5.4. 10-18 cm2, respectively. The Kr2F* absorption cross section is roughly 20 percent of that reported for Kr2+at the same wavelength. The fluorescence efficiency of Kr2F* in e-beam ex-cited 94.93 percent Ne/5 percent Ki/0.07percent F2 (Ptotal = 4000 torr) gas mixtures has been found to be a factor of 2.8 higher than that of the N2(C--->B) band in Ar/5 percent N2 mixtures. Also, the rate constant for quenching of Kr2F* by F2. was measured to be (4.1 ± 0.5)· 10–10 cm3. s-1 at 300 K and (3.0 ± 0.5). 10–10 cm2. s-1 at 196 K.

Original languageEnglish (US)
Pages (from-to)1146-1156
Number of pages11
JournalIEEE Journal of Quantum Electronics
Volume15
Issue number10
DOIs
StatePublished - Oct 1979

Fingerprint

Gas mixtures
wings
gas mixtures
Lasers
photoabsorption
absorption cross sections
lasers
Electron beams
Quenching
Rate constants
Fluorescence
quenching
electron beams
continuums
Wavelength
fluorescence
cross sections
predictions
wavelengths
Experiments

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Absorption in the Near-Ultraviolet Wing of the Kr2F* (410 nm) Band. / Eden, J. G.; Palumbo, L. J.

In: IEEE Journal of Quantum Electronics, Vol. 15, No. 10, 10.1979, p. 1146-1156.

Research output: Contribution to journalArticle

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