Energy dependence of the ionization of highly excited atoms by collisions with excited atoms
- 1 February 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 19 (2) , 542-550
- https://doi.org/10.1103/physreva.19.542
Abstract
Approximate analytical expressions are derived for the ionization cross sections in the high- and low-collision-energy limits, using the improved impulse approximation based on the assumption that the electron-atom inelastic-scattering amplitude is a function only of the momentum transfer. Both cases of simultaneous excitation and de-excitation of one of the atoms are discussed. The formulas are applied to the collisions between two excited hydrogen atoms and are found very useful for estimating the cross sections in the wide range of collisions energies.Keywords
This publication has 8 references indexed in Scilit:
- Improved impulse approximation for ionization collisions between atomsPhysical Review A, 1978
- Energy dependence of the cross sections for ionisation collisions between two excited hydrogen atomsJournal of Physics B: Atomic and Molecular Physics, 1978
- Form factors of the hydrogen atom in excited statesPhysical Review A, 1974
- The semiquantal theory of heavy particle inelastic collisions with neutral atoms and molecules. II. Thermal, intermediate and high-energy collisionsAnnals of Physics, 1973
- Inelastic Collisions of Fast Charged Particles with Atoms and Molecules—The Bethe Theory RevisitedReviews of Modern Physics, 1971
- Semiquantal theory of heavy-particle excitation, deexcitation, and lonization by neutral atoms: I. Slow and Intermediate Energy CollisionsAnnals of Physics, 1970
- Differential cross sections for ionization of the hydrogen atom by fast charged particles in the binary-encounter theory and bethe theoryJournal of Physics B: Atomic and Molecular Physics, 1968
- Zur Theorie des WasserstoffatomsThe European Physical Journal A, 1935