TY - JOUR
T1 - Measurements of rotational relaxation cross sections for H2CO
AU - Foreman, P. B.
AU - Chien, K. R.
AU - Kukolich, S. 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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U2 - 10.1016/0009-2614(74)85035-9
DO - 10.1016/0009-2614(74)85035-9
M3 - Article
AN - SCOPUS:49549160086
VL - 29
SP - 295
EP - 297
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 2
ER -