Rotational excitation of CO by collisions with He, H, and H/sub 2/ under conditions in interstellar cloud

Journal Article · Sat May 01 00:00:00 EDT 1976 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/154333· OSTI ID:7347407

Green, S; Thaddeus, P

Cross sections for rotational excitation of small molecules by low-energy collisions with helium and hydrogen can currently be obtained via accurate numerical solution of the quantum equations that describe both intermolecular forces and collision dynamics. The relevant methods are discussed in some detail and applied to compute excitation rates for carbon monoxide. These calculations also predict collision-induced spectral pressure broadening constants which are in excellent agreement with available experimental data. (AIP)

• Research Organization: Goddard Institute for Space Studies
• OSTI ID: 7347407
• Journal Information: Astrophys. J.; (United States), Vol. 205:3
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
INTERSTELLAR SPACE
MOLECULE-MOLECULE COLLISIONS
CARBON MONOXIDE
EXCITATION
HELIUM
HYDROGEN
MOLECULES
NUMERICAL SOLUTION
ROTATION
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
CRYOGENIC FLUIDS
ELEMENTS
ENERGY-LEVEL TRANSITIONS
FLUIDS
MOLECULE COLLISIONS
MOTION
NONMETALS
OXIDES
OXYGEN COMPOUNDS
RARE GASES
SPACE
640105* - Astrophysics & Cosmology- Galaxies