NASA NTRS · 20060052440
Spin Changing Collisions of Hydrogen
Abstract
We 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.
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Zygelman, Bernard. 2006-08-01. Spin Changing Collisions of Hydrogen. https://ntrs.nasa.gov/citations/20060052440
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