ELECTRON-SPIN POLARIZATION OF DOUBLET STATE SPECIES DUE TO INTERACTION WITH EXCITED TRIPLET-STATES IN SINGLE-CRYSTALS

被引：22

作者：

CORVAJA, C

FRANCO, L

TOFFOLETTI, A

机构：

[1] Department of Physical Chemistry, University of Padova, Padova, 2 35131, via Loredan

来源：

APPLIED MAGNETIC RESONANCE | 1994年 / 7卷 / 2-3期

关键词：

D O I：

10.1007/BF03162615

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Doublet states species trapped in crystalline solids show transient spin polarized EPR spectra if the crystal is illuminated by visible or UV light. The spin polarization is accounted for by the interaction of the doublet species with photoexcited triplet states. The mechanism of the process producing the spin polarization is examined and some experimental examples are discussed. The analysis of the time evolution of the transient variation of the EPR signal allows the measurements of the spin lattice relaxation time and in some cases of the diffusion rate of mobile triplet excitations in the crystal lattice.

引用

页码：257 / 269

页数：13