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Phenomenology of EPR Trapped Electron Spectra Produced by Photoionization in Alkalines at 4.2° k and 77° k
Author(s) -
Lin D.P.
Publication year - 1975
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.197500001
Subject(s) - chemistry , photoionization , electron , spectral line , laser linewidth , electron paramagnetic resonance , dipole , atomic physics , relaxation (psychology) , molecule , absorption spectroscopy , analytical chemistry (journal) , molecular physics , nuclear magnetic resonance , laser , ionization , ion , optics , physics , organic chemistry , social psychology , psychology , quantum mechanics , astronomy
Abstract Trapped electrons, e c − , are produced by photoionization of K 4 Fc(CN) 6 in 10 M NaOH/H 2 O and 10 M NaOD/D 2 O glasses at 4.2° K . The linewidth, ΔH ms , of e c − changes reversibly between these two temperatures in contrast to the observations for organic matrics. Three proposed mechanisms including dipole relaxation of pendent molecules surrounding the electron cavity, contraction‐expansion model of cavity, and electron retrapping process are each discussed. It appears that no one physical model satisfactorily accounts for the present observations. The electron retrapping process, however, might be a better condidate for interpreting the experimental results in compatible with the optical absorption data.