TIME-RESOLVED EPR STUDY OF SPIN POLARIZATION AND DYNAMICS OF F+ CENTERS IN ADDITIVELY COLORED CAO CRYSTALS

Authors
CORVAJA C FJRANCO L PASIMENI L TOFFOLETTI A
Citation
C. Corvaja et al., TIME-RESOLVED EPR STUDY OF SPIN POLARIZATION AND DYNAMICS OF F+ CENTERS IN ADDITIVELY COLORED CAO CRYSTALS, Journal of the Chemical Society. Faraday transactions, 90(21), 1994, pp. 3267-3271
Citations number
12
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical
Journal title
Journal of the Chemical Society. Faraday transactions → ACNP
ISSN journal
09565000
Volume
90
Issue
21
Year of publication
1994
Pages
3267 - 3271
Database
ISI
SICI code
0956-5000(1994)90:21<3267:TESOSP>2.0.ZU;2-E
Abstract
Optical excitation of additively coloured CaO crystals generates 1T1u and 3T1u excited states and F+ defects, the latter being revealed by E PR experiments. Interaction of the excited 3T1u triplet state and the F+ centre is documented by the emissive character of the transient EPR signal detected just after a laser pulse. A quenching of the initial polarization, observed at high microwave power, is ascribed to microwa ve saturation of the F+ spin levels.