Abstract
Cross sections for the 111, 110, 212, and 211 rotational states and for total beam attenuation of H2CO were measured using a beam maser spectrometer. Significant inelastic scattering in the forward direction was obtained for He and CF3H. Significant inelastic contributions were not observed using H2 as a scattering gas. Observed cross sections for the 111 state are larger than those for the 110 state. The relations of the present cross sections to various models for obtaining a low excitation temperature for the 111-110 doublet of formaldehyde in interstellar space is discussed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 295-297 |
| Number of pages | 3 |
| Journal | Chemical Physics Letters |
| Volume | 29 |
| Issue number | 2 |
| DOIs | |
| State | Published - Nov 15 1974 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Spectroscopy
- Condensed Matter Physics
- Atomic and Molecular Physics, and Optics
- Surfaces and Interfaces
Cite this
Measurements of rotational relaxation cross sections for H2CO. / Foreman, P. B.; Chien, K. R.; Kukolich, Stephen G.
In: Chemical Physics Letters, Vol. 29, No. 2, 15.11.1974, p. 295-297.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Measurements of rotational relaxation cross sections for H2CO
AU - Foreman, P. B.
AU - Chien, K. R.
AU - Kukolich, Stephen G
PY - 1974/11/15
Y1 - 1974/11/15
N2 - Cross sections for the 111, 110, 212, and 211 rotational states and for total beam attenuation of H2CO were measured using a beam maser spectrometer. Significant inelastic scattering in the forward direction was obtained for He and CF3H. Significant inelastic contributions were not observed using H2 as a scattering gas. Observed cross sections for the 111 state are larger than those for the 110 state. The relations of the present cross sections to various models for obtaining a low excitation temperature for the 111-110 doublet of formaldehyde in interstellar space is discussed.
AB - Cross sections for the 111, 110, 212, and 211 rotational states and for total beam attenuation of H2CO were measured using a beam maser spectrometer. Significant inelastic scattering in the forward direction was obtained for He and CF3H. Significant inelastic contributions were not observed using H2 as a scattering gas. Observed cross sections for the 111 state are larger than those for the 110 state. The relations of the present cross sections to various models for obtaining a low excitation temperature for the 111-110 doublet of formaldehyde in interstellar space is discussed.
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UR - http://www.scopus.com/inward/citedby.url?scp=49549160086&partnerID=8YFLogxK
U2 - 10.1016/0009-2614(74)85035-9
DO - 10.1016/0009-2614(74)85035-9
M3 - Article
VL - 29
SP - 295
EP - 297
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 2
ER -