Line width parameters for a number of spectral lines in the pure rotational spectrum of formaldehyde (CH20) and formic acid (HCOOH) have been measured using a sourcemodulated microwave spectrograph. All transitions studied in this investigation were of the type ΔJ=O (i.e. Q-branch transitions), with ΔK-1=0 and ΔK+1 =+l. The center frequencies of the measured lines varied from 8662.0 MHz to 48612.70 MHz. The experimentally determined collision diameters for self broadening interactions involving HCOOH and CH2 Q molecules were found to be 2 - 27 per cent less than those calculated by the Murphy-Boggs theory of collision broadening. Much better agreement between a simplified broadening scheme for symmetric top molecules and the observed foreign-gas collision diameters is obtained by using Birnbaum's theory.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc500522 |
| Date | 08 1900 |
| Creators | Venkatachar, Arun C. |
| Contributors | Roberts, James A., Redding, Rogers W., Mackey, Henry J., Deering, William D., McIntyre, Bernard J. |
| Publisher | North Texas State University |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | vi, 105 leaves : ill., Text |
| Rights | Public, Venkatachar, Arun C., Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved. |
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