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Spin Changing Collisions of HydrogenWe discuss spin changing collisions of hydrogen atoms. Employing a fully quantal theory we calculate and present new collision data. We discuss the respective roles of spin exchange and long range magnetic interactions in collisonal redistribution of sub-level populations. The calculated atomic data is needed for accurate modeling of 21 cm line emission/absorption by primordial hydrogen in the early universe.
Document ID
20060052440
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Zygelman, Bernard (Nevada Univ. Las Vegas, NV, United States)
Date Acquired
August 23, 2013
Publication Date
August 1, 2006
Publication Information
Publication: Proceedings of the NASA Laboratory Astrophysics Workshop
Subject Category
Astrophysics
Funding Number(s)
CONTRACT_GRANT: DE-FG36-05GO-85028
Distribution Limits
Public
Copyright
Public Use Permitted.

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