Cutoff Theory of Impact Broadening and Shift.
Abstract
An impact theory of pressure broadening and shift of rotationvibration lines using a natural cutoff is described. The theory is based on Anderson's theoretical framework and employs an exponential expansion of the collision matrix elements derived using a linked cluster theorem for degenerate states. The final expression for the interruption function is similar in form to Gordon's classical interruption function. Closed form expressions for the broadening and shift cross sections are given for exactly resonant dipoledipole collisions, and a calculation of the HCl selfbroadening in the 02 vibrational band is given.
 Publication:

Ph.D. Thesis
 Pub Date:
 1976
 Bibcode:
 1976PhDT........15L
 Keywords:

 Physics: Molecular;
 CutOff;
 Frequency Shift;
 Impact;
 Pressure Broadening;
 Theoretical Physics;
 Collisions;
 Interruption;
 Molecular Rotation;
 Scattering Cross Sections;
 Vibrational Spectra;
 SolidState Physics