The effect of elastic and reorientation collisions on vibration-rotation lineshapes

A semi-empirical approach

Andrew E. DePristo, Herschel Albert Rabitz

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Collisional broadening of rotation-vibration spectral lines is investigated. The contributions from inelastic and elastic-reorientation collisions are separated using a semi-empirical inversion procedure. The basis for this deconvolution is the derivation of a relationship between the enelastic, Win, and elastic-reorientation, Wel-r, contributions to the width, which depends upon a single unknown parameter. The experimental linewidth, Wexp = Wel-r + Win, suffices to determine this parameter uniquely, which is then used to calculate the individual components Wel-r and Win. Results of applications to the CO-, HF-, and HCI- rare gas systems are presented.

Original languageEnglish (US)
Pages (from-to)65-79
Number of pages15
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume22
Issue number1
DOIs
StatePublished - Jan 1 1979

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Noble Gases
Deconvolution
Carbon Monoxide
Human computer interaction
Linewidth
retraining
elastic scattering
vibration
collisions
line spectra
rare gases
derivation
inversions

All Science Journal Classification (ASJC) codes

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

Cite this

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AB - Collisional broadening of rotation-vibration spectral lines is investigated. The contributions from inelastic and elastic-reorientation collisions are separated using a semi-empirical inversion procedure. The basis for this deconvolution is the derivation of a relationship between the enelastic, Win, and elastic-reorientation, Wel-r, contributions to the width, which depends upon a single unknown parameter. The experimental linewidth, Wexp = Wel-r + Win, suffices to determine this parameter uniquely, which is then used to calculate the individual components Wel-r and Win. Results of applications to the CO-, HF-, and HCI- rare gas systems are presented.

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