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On the L‐Bands and the First Exciton Bands in the Photoemission Spectra of Alkali Iodides
Author(s) -
Petrescu P.
Publication year - 1968
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19680290134
Subject(s) - exciton , spectral line , alkali metal , absorption (acoustics) , angle resolved photoemission spectroscopy , chemistry , atomic physics , electron , absorption spectroscopy , physics , optics , condensed matter physics , organic chemistry , quantum mechanics , astronomy
The photoemission spectra of NaI, KI, RbI and CsI are investigated experimentally. Besides the bands already revealed by optical absorption measurements and confirmed by photoemission studies, the L 1 –L 4 ‐bands in Nal, the L 4 ‐band in RbI, and the fine structure of the E 1 ‐bands in KI and RbI are observed. In CsI electron emission is detected corresponding to the first exciton band in the absence of F‐centres. The very intense “extra”‐bands occurring in the absorption spectra are not found.