Astronomy and Astrophysics – Astronomy
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008apj...678..950s&link_type=abstract
The Astrophysical Journal, Volume 678, Issue 2, pp. 950-960.
Astronomy and Astrophysics
Astronomy
8
Atomic Data, Atomic Processes, Diffusion, Ism: Atoms, Ism: Clouds, Ism: Supernova Remnants, Sun: Corona
Scientific paper
The momentum transfer and viscosity cross sections for proton-hydrogen collisions are computed in the velocity range of ~200-20,000 km s-1 relevant to a wide range of astrophysical environments such as supernova remnant shocks, solar wind, winds within young stellar objects or accretion disks, and interstellar protons interacting with the heliosphere. A variety of theoretical approaches are used to arrive at a best estimate of these cross sections in this velocity range that smoothly connect with very accurate results previously computed for lower velocities. Contributions to the momentum transfer and viscosity cross sections from both elastic scattering and charge transfer are included.
Krstic Predrag S.
Lee Teck-Ghee
Raymond John C.
Schultz David R.
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