Far-Infrared Laser Stark Spectroscopy of 1,1 Difluoroethylene |
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| Authors: | S R Raju L H Johnston G R Sudhakaran J L Olson M Jackson and R Wellington Davis |
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| Institution: | (1) Boeing Satellite Systems, P. O. Box 92919, Los Angeles, CA, 90009;(2) Department of Physics, University of Idaho, Moscow, ID, 83844;(3) Department of Physics, University of Wisconsin-La Crosse, La Crosse, WI, 54601;(4) Department of Chemistry, Memorial University of Newfoundland, St. John's, NF A1B 3X7, CA |
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| Abstract: | The far-infrared laser Stark spectrum of 1,1 difluoroethylene (H2C=CF2) has been investigated with the 311  m line of the hydrogen cyanide (HCN) laser. Numerous families of absorption lines have been observed for both parallel and perpendicular polarizations up to 60 000 V/cm. Three families of resonances have been identified as J(Ka,Kc) = 41(35,7)  40(33,8), 40(36,5) 39(34,6) and 43(35,8) 42(33,9). The Stark shift for the first two transitions can be adequately explained by quasi-first-order calculations, whereas the Stark shift for the third transition requires second-order corrections. The zero-field frequencies for these transitions have been experimentally determined and are reported with fractional uncertainties up to a few parts in 106. |
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| Keywords: | 1 1 difluoroethylene Stark effect far-infrared spectroscopy HCN laser |
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