The Raman electron spin-lattice relaxation process for diatomic molecules: II. Experiments in Ca(OH)2: O−2

✍ Scribed by G.D.F. van Velzen; J.C.M. Sprenkels; J.C. Voorhoeve; C.H.M. Meyer; W. van Toledo; L. Korstanje; P. Box; W.Th. Wenckebach

• Book ID: 103891282
• Publisher: Elsevier Science
• Year: 1987
• Weight: 633 KB
• Volume: 145
• Category: Article
• ISSN: 0378-4363
• DOI: 10.1016/0378-4363(87)90071-4

✦ Synopsis

In a previous paper we have calculated the theoretical temperature and angular dependence of the electron spin-lattice relaxation rate due to Raman processes for diatomic molecules. In this paper it is shown that these processes caused by normal lattice modes and resonance modes give a good explanation of the measured relaxation times of O~ molecules in Ca(OH)2. For high temperatures (T > 6 K) the relaxation is caused by the librational Raman process due to lattice modes with a T 9 temperature dependence. The relaxation at lower temperatures is dominated by a Raman process due to resonance modes. The relaxation rate is then proportional to exp(hwr/kT)/(exp(h~or/kT ) -1) z and the frequency of the resonance mode wr is approximately 2 K.