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Detection of atomic hydrogen in flames by resonance four-photon ionization at 365 nm

✍ Scribed by Paul J.H. Tjossem; Terrill A. Cool

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 465 KB
Volume: 100
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(83)87412-0

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✦ Synopsis

The first observations of the four-photon ionization of H atoms at 364.7 nm via a three-photon resonance on the Lyman alpha transition are reported. The resonance ionization detection of H and D atoms in an Hz/Dz/Oz/Ar flame is demonstrated and H-atom density profiles arc measured with good spatial resolution. A broadening of 2.2 cm-'/GW cm2 of the four-photon resonance by ac Stark shifting is observed.

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