Cross sections for rotationally inelastic scattering of formaldehyde. III. Differential measurements on D2CO-H2 scattering
Abstract
Differential cross sections for rotational transitions in D2CO induced by collisions with H2 are measured at a collision energy of 17 meV. The 110 state of D2CO is prepared with high state purity by a combination of rotational cooling in a seeded beam expansion and electrostatic state selection. The final state after scattering is probed as a function of the scattering angle by laser-induced fluorescence detection with excitation at 325 nm. The first results with the final states 110, 111, 211, and 212 are presented. The differential cross section for the ΔJ=1 transition 110→211 displays a relatively large contribution at large angles compared to the cross sections for the other transitions.
- Publication:
-
Journal of Chemical Physics
- Pub Date:
- September 1987
- DOI:
- 10.1063/1.453062
- Bibcode:
- 1987JChPh..87.2750V
- Keywords:
-
- Deuterium Compounds;
- Formaldehyde;
- Inelastic Scattering;
- Molecular Rotation;
- Scattering Cross Sections;
- Fine Structure;
- Hydrogen;
- Laser Induced Fluorescence;
- Masers;
- Molecular Clouds;
- Ultraviolet Spectra;
- Atomic and Molecular Physics