Empirical formulas for direct double ionization by bare ions: to 92
Abstract
Experimental cross sections and cross-section ratios reported in the literature for direct double ionization of the outer shells of helium, neon, and argon atoms resulting from bare ions ranging from protons to uranium and for antiprotons are analyzed in terms of a first- and second-order interference model originally proposed by McGuire [J. H. McGuire, Phys. Rev. Lett. 49, 1153 (1982)]. Empirical formulas for the various contributions to double ionization plus information about the phase difference between the first- and second-order mechanisms are extracted from the data. Projectile and target scalings are also extracted. Total cross sections and their ratios determined using these formulas and scalings are shown to be in very good agreement with experimental data for lower-Z projectiles and impact velocities larger than 1 a.u. For very-high-Z projectiles, the amount of double ionization is overestimated, probably due to saturation of probabilities that is not accounted for in scaling formulas.
- Authors:
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1179669
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Physical Review A - Atomic, Molecular, and Optical Physics
- Additional Journal Information:
- Journal Name: Physical Review A - Atomic, Molecular, and Optical Physics Journal Volume: 90 Journal Issue: 5; Journal ID: ISSN 1050-2947
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
Citation Formats
DuBois, R. D., Santos, A. C. F., and Manson, S. T. Empirical formulas for direct double ionization by bare ions: Z = - 1 to 92. United States: N. p., 2014.
Web. doi:10.1103/PhysRevA.90.052721.
DuBois, R. D., Santos, A. C. F., & Manson, S. T. Empirical formulas for direct double ionization by bare ions: Z = - 1 to 92. United States. https://doi.org/10.1103/PhysRevA.90.052721
DuBois, R. D., Santos, A. C. F., and Manson, S. T. Tue .
"Empirical formulas for direct double ionization by bare ions: Z = - 1 to 92". United States. https://doi.org/10.1103/PhysRevA.90.052721.
@article{osti_1179669,
title = {Empirical formulas for direct double ionization by bare ions: Z = - 1 to 92},
author = {DuBois, R. D. and Santos, A. C. F. and Manson, S. T.},
abstractNote = {Experimental cross sections and cross-section ratios reported in the literature for direct double ionization of the outer shells of helium, neon, and argon atoms resulting from bare ions ranging from protons to uranium and for antiprotons are analyzed in terms of a first- and second-order interference model originally proposed by McGuire [J. H. McGuire, Phys. Rev. Lett. 49, 1153 (1982)]. Empirical formulas for the various contributions to double ionization plus information about the phase difference between the first- and second-order mechanisms are extracted from the data. Projectile and target scalings are also extracted. Total cross sections and their ratios determined using these formulas and scalings are shown to be in very good agreement with experimental data for lower-Z projectiles and impact velocities larger than 1 a.u. For very-high-Z projectiles, the amount of double ionization is overestimated, probably due to saturation of probabilities that is not accounted for in scaling formulas.},
doi = {10.1103/PhysRevA.90.052721},
journal = {Physical Review A - Atomic, Molecular, and Optical Physics},
number = 5,
volume = 90,
place = {United States},
year = {Tue Nov 25 00:00:00 EST 2014},
month = {Tue Nov 25 00:00:00 EST 2014}
}
https://doi.org/10.1103/PhysRevA.90.052721
Web of Science
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