Collision Broadening in the Microwave Rotational Spectrum of Gaseous Monomeric Formaldehyde Page: 4
This dissertation is part of the collection entitled: UNT Theses and Dissertations and was provided to UNT Digital Library by the UNT Libraries.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
Anomalous behavior was observed in some of the graphs
of half-width versus pressure. Namely, the slopes of the
graphs occasionally changed abruptly at a particular pressure.
Attempts to explain this anomaly in terms of saturation,
sample composition, and impact theory were all unsuccessful.
Neither could the effect be attributed to magnetic inter-
actions because changes in slope also occurred in some lines
that can have no magnetic hyperfine structure. The impli-
cations of the observed effect, if assumed real, are also
discussed.
Several general comments are made concerning the large
collision diameters observed for the two lowest K-doublets
under the conditions of foreign-gas broadening by H2, as
they relate to the observed "inverse masing" of H CO molecules
in interstellar dust clouds. A brief outline of a more
definitive test for the broadening due to collisionally-
induced transitions between these levels is also included.
Upcoming Pages
Here’s what’s next.
Search Inside
This dissertation can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Dissertation.
Rogers, David Valmore. Collision Broadening in the Microwave Rotational Spectrum of Gaseous Monomeric Formaldehyde, dissertation, December 1973; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc500274/m1/4/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .