Photo-assisted fragmentation spectroscopy of triatomic hydrogen

✍ Scribed by Susan F. Selgren; Gregory I. Gellene

• Book ID: 103025052
• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 440 KB
• Volume: 146
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(88)87485-2

✦ Synopsis

The RO(0) line of the 3s2A', +2p 'A;' transition of the H3 radical has been observed in absorption by the new technique of photo-assisted fragmentation spectroscopy. A fast beam of metastable H, radicals produced by Hz/K electron transfer is interacted with visible light from a dye laser. Optical absorption is detected by observing a decrease in parent peak intensity in the H: neutralization-reionization mass spectrum, resulting from dissociation of the neutral molecule. Absorption line widths are observed to be instrumentally limited ( no.05 cm-') as the upper state of the transition is spectroscopically long lived. Application of the technique to various second-row hypervalent hydride radicals is discussed.