Electron spin emission phenomena

✍ Scribed by P. W. Atkins

• Publisher: John Wiley and Sons
• Year: 1973
• Tongue: English
• Weight: 572 KB
• Volume: 5
• Category: Article
• ISSN: 0749-1581
• DOI: 10.1002/mrc.1270050510

✦ Synopsis

Abstract

A brief review of a method that has been used to observe transient ESR signals from short‐lived radicals generated photolytically is presented. At short intervals emission spectra are observed, which in the cases studied (aromatic carbonyls in paraffins) show virtually no multiplet effect. One application of this observation is to the direct determination of electron spinlattice relaxation times in liquids. Some of the theoretical problems connected with the polarisation process are described, with particular reference to the role of radical re‐encounters. Some simple analytical expressions for the polarisation are presented.