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Characterization of an intermediate case exciton in the emission of Cd-doped and pure AgBr

 

作者: A.P. Marchetti,   J.P. Spoonhower,   M.S. Burberry,  

 

期刊: Radiation Effects and Defects in Solids  (Taylor Available online 1991)
卷期: Volume 119-121, issue 1  

页码: 331-336

 

ISSN:1042-0150

 

年代: 1991

 

DOI:10.1080/10420159108224896

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Pulsed emission data and ODMR spectra of the 580 nm band provide evidence for an intermediate case exciton in pure and Cd2+-doped AgBr. This interpretation is based on the observed g-factor and the absence of a wavelength shift of the emission after pulsed excitation in pure AgBr. It is supported by the response of the ODMR spectra as the microwave modulation frequency is changed. The two central ODMR lines observed in AgBr (g = 1. 78) are assigned to transitions from the ms=±1 levels to the ms= 0 level of an intermediate case triplet exciton, which has an exchange coupling (singlet-triplet splitting) of -1. 9 ± 0. 2 cm−1.

 

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