NDLI: Hybrid Quantum Mechanical - Quasi-Classical Model for Evaluating Ionization and Stripping Cross Sections in Atom-Ion Collisions

Content Provider	IEEE Xplore Digital Library
Author	Kaganovich, I.D. Startsev, E.A. Davidson, R.C.
Copyright Year	2005
Description	Author affiliation: Plasma Physics Laboratory, Princeton University, Princeton, New Jersey, 08543 USA, ikaganov@pppl.gov (Kaganovich, I.D.)
Abstract	Ion-atom ionization cross sections are needed in many applications employing the propagation of fast ions through matter. When experimental data or full-scale theoretical calculations are non-existent, approximate methods must be used. The most robust and easy-to-use approximations include the Born approximation of quantum mechanics and the quasi-classical approach utilizing classical mechanics together with the Bohr-Sommerfeld quantization rule. A hybrid method has been developed for calculation of the ionization and stripping cross sections of ions or atoms by fast ions by combining the Born approximation of quantum mechanics and the quasi-classical approach in the regions of impact parameters in which they are valid, and summing the results to obtain the total cross section. The results of the modified approach agree better with the experimental data than either the Born approximation or the quasi-classical approach, applied separately. A new scaling formula for the ionization and stripping cross section of atoms and ions by fully stripped projectiles has been also proposed. The scaling has no fitting parameters and has been checked against 11 different pairs of projectile and target atoms. All of the experimental data overlap on a single curve in the proposed scaled coordinates.
Starting Page	1988
Ending Page	1990
File Size	1406174
Page Count	3
File Format	PDF
ISBN	0780388593
DOI	10.1109/PAC.2005.1590982
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-05-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quantum mechanics Ionization Scattering Approximation methods Projectiles Electrons Plasma applications Physics Laboratories Robustness
Content Type	Text
Resource Type	Article

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