Pressure Broadening of J=1<-0 Rotational Line of Fluoroform Caused by Spherical Perturbers |
| S. Gierszala, J. Galicaa, E. Mi¶-KuĽmińskaa and A. Liberb aInstitute of Molecular Physics, Polish Academy of Sciences Smoluchowskiego 17, 60-179 Poznań, Poland bComputer Science Department, Wrocław University of Technology Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland |
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| Received: November 2, 2001; revised version February 25, 2002 |
| The foreign-gas broadening parameter was measured for CHF3 molecule interacting with spherical (SF6, CF4, CH4, CCl4) perturbers and the pressure shift parameter of rotational transition J=1>-0 in the CHF3 molecule was obtained. For the systems of trifluoromethane molecule and four spherical molecules as perturbers the collision cross-sections were determined. Experimental line width parameters are interpreted using Anderson-Tsao-Curnutte as well as Murphy-Boggs theories. Accounting for the dispersive and inductive interactions the cross-section was determined. The theoretical values are in qualitative agreement with the experimental results, but the absolute values of the measured cross-section were larger than these calculated. |
| DOI: 10.12693/APhysPolA.101.805 PACS numbers: 33.20.Bx, 33.20.Sn |