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December 1, 1988The Astrophysical Journal

Semiempirical formulae for electron impact excitation and ionization of hydrogenic ions

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Authors

DSDouglas H. SampsonMissouri State UniversityHZHong Lin ZhangSouthwest Petroleum University

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Implication

This randomized trial evaluates electron impact excitation and ionization in hydrogenic ions, highlighting their accuracy for plasma modeling.

Key Points

  • The aim is to provide semiempirical formulas for collision strengths and rate coefficients relevant for electron impact processes in hydrogenic ions.
  • Developed semiempirical formulas for n - n-prime transitions and electron impact ionization cross sections.
  • Incorporated screening constants to approximate transitions in nonhydrogenic ions.
  • Compared results with extensive accurate data for validation.
  • Formulas generally accurate within 25 percent for hydrogenic ions with nuclear charge number 2 to 10 or greater.
  • Accuracy improves for conditions of major interest in plasma modeling.

Cite This Study

Sampson et al. (1988) studied this question.

synapsesocial.com/papers/6a229aaa8bbdc557f5cd3f4dhttps://doi.org/10.1086/166945
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