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Polarization Spectroscopy of Pendular Molecules in the Gas Phase
Author(s) -
Slenczka Alkwin
Publication year - 1999
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/(sici)1521-3765(19990401)5:4<1136::aid-chem1136>3.0.co;2-a
Subject(s) - polarization (electrochemistry) , spectral line , spectroscopy , paramagnetism , molecule , polar , chemistry , molecular physics , magnetic field , chemical polarity , atomic physics , condensed matter physics , physics , organic chemistry , quantum mechanics , astronomy
Orientation of polar or paramagnetic molecules in a uniform electric or magnetic field elegantly reduces congestion in laser spectra of electronic transitions. For room‐temperature samples the intensity distribution of polarization spectra concentrates at the band head of rotational branches as it normally would at a temperature of a few Kelvin. Moreover, some rotational branches are eliminated entirely, so resolution increases without loss of information. Experimental procedure and a quantitative simulation of polarization spectra of pendular molecules are demonstrated for the ICl molecule (diagram), and extension to larger molecules is discussed.