Abstract
Atoms in states of low excitation have radii of order a 0 = 1 bohr, ionization energies of order 1 rydberg (Ry), and charged particle cross sections of order πa 20 . Optically allowed radiative transitions from these states are faster than the corresponding transitions produced by collisions in most astrophysical environments.
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© 1983 Plenum Press, New York
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Percival, I. (1983). Collisions Between Charged Particles and Highly Excited Atoms. In: Burke, P.G., Eissner, W.B., Hummer, D.G., Percival, I.C. (eds) Atoms in Astrophysics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-3536-8_3
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