摘要:

The relaxation of the two configurations of the FH(OH−) center in KBr is studied with a time-resolved induced transparency technique. Multiple decay components are observed. The slowest of these is interpreted as conversion in the ground state between the red and blue configuration of the FHcenter, on a longer than nanosecond time scale. A contribution of the order of 100 ps might be related to non-radiative electronic relaxation, but cannot be identified with certainty. An unresolved transient, faster than 10 ps, might be related to a cross-over process.

ISSN:1042-0150    

DOI:10.1080/10420159508227275

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

The paper is dedicated to investigation of possible ways of stabilization of the H centres created together with F and Mg+centres in a process of decay of selftrapped exciton. As a main mode of the H centres stabilizationa capture of the H centre by magnesium-vacancy dipole and creation of V-type centre was suggested. This process was theoretically studied in the frames of model of molecular cluster which electron structure was calculated by the semi-empirical version of the Hartree-Fock method. For experimental corroboration of this process the relations between dependences of magnesium dipoles decrease on dose of gamma irradiation and corresponding dose dependences of the Mg+, Mg°, and F centres radiation creation were used.

ISSN:1042-0150    

DOI:10.1080/10420159508227276

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:1042-0150    

DOI:10.1080/10420159508227174

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor