Quadrature phase relationships in phosphorescence microwave double resonance spectroscopy

✍ Scribed by C.B. Harris; R.J. Hoover

• Publisher: Elsevier Science
• Year: 1971
• Tongue: English
• Weight: 557 KB
• Volume: 12
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(71)80620-6

✦ Synopsis

The functional dependence of the phase shift of a time-dependent phosphorescence intensity change Mative to a repetitive delta-function microwave perturbation is @ven in terms of the aipkt state kinetic par;rrnet= =d the perturbation repetition rate. This extension of quadrature measurements to the phosphorescent microwave doubk resonance (LWDR) technique is found to be particularly useful since the phase shift is independent of the degree of spin aligilment of the magnetic sublevels, the degree of microwave saturation, and the poluization of the microwve transition moment It is shown thit the symmetries of vibronic bands in the phosphorescence can be distinguished by measuring the phase shift. Experimental results are reported for ~chlorolmzeae and s-tetracblorobenzene.