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The optical absorption of MgF 2 , MgCl 2 , and MgBr 2 in the vicinity of the Mg L‐shell transitions
Author(s) -
Rabe P.,
Sonntag B.,
Sagawa T.,
Haensel R.
Publication year - 1972
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.2220500217
Subject(s) - absorption (acoustics) , desy , shell (structure) , exciton , absorption spectroscopy , alkali metal , synchrotron radiation , halide , spectral line , atomic physics , analytical chemistry (journal) , synchrotron , materials science , range (aeronautics) , chemistry , optics , physics , inorganic chemistry , condensed matter physics , chromatography , composite material , organic chemistry , astronomy
The Mg ++ L II, III ‐absorption spectra of evaporated thin films of MgF 2 , MgCl 2 , and MgBr, have been measured in the energy range from 50 to 150 eV. Sharp absorption bands due to excitons were found at the onset of transitions from the 2p‐shell of Mg ++ around 52 eV. At higher energies transitions from the 3d‐level of Br‐ and from the 2s‐level of Mg ++ show up as absorption maxima. The spectra are compared with those of metallic Mg, and the corresponding alkali halides. The measurements were performed by using the synchrotron radiation of the electron synchrotron DESY.