Photolysis of molecules by an infrared high-power laser pulse

✍ Scribed by R.V. Ambartzumian; N.V. Chekalin; V.S. Letokhov; E.A. Ryabov

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 353 KB
• Volume: 36
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(75)80241-7

✦ Synopsis

WC report the spectra of visible luminescence which accompanies the infrared photolysis of molecules by an htense CO2 la,wr pulse. The moiecules studied were CzH4, CzF3Cl. CHsOH, CHsNOz, CH;CN, CFzC12 and BC13. A gated system recorded the signal during the fust 100-200 ns after the lsser pulse, i.e., during the collisiordess diswciation phase. The. dissociated products were identified. The mechanism of the inf,qred photolyses is discussed and compared ~vivith UV photolyses.

C _ introduction

In our previous paper [l] we investigated the kinetics of visible luminescence in BCI, which occurs when the mo!ecules resonantly absorb intense infrared radiation. It was shown that the molecules can dissociate instantaneously due to the build-up of stored vibrational energy in the absorbing molecules, and that this process requires no collisions. Thus the dissociation of the