Multiphoton ultraviolet photochemistry

✍ Scribed by W.M. Jackson; Joshua B. Halpern; Chung-San Lin

• Book ID: 103015412
• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 442 KB
• Volume: 55
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(78)87013-4

✦ Synopsis

Multiphoton photodïssocïation bas been observed in C2N2, CaHa, CsH4, CHsOH, and CaHsOH. In aU of these mok cules fluorescente from small free radicak such as CN, CH, and OH bas been observed. None of the observcd fluorcscence can result from the absorption of a single 193 nm photon. Arguments are presented which suggest that the observed results are best explained by invoking a sequential absorption scheme where the excited molecule absorbs a second laser photon rather than predissociating. Jküssions have also been observed when HzO is photolyzed wïth the ArF laser. In Hz0 the evidence suggests that tIds enüssion arises from collisional dissociation of two excited Ha0 molecules.