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Abstract:

In this paper we report ionization cross sections of positive Li +, Na+, K+, Rb+, neutral He, Ne, Ar, Kr, Xe, and negative F-, Cl-, Br-, I - ions by impact of protons with energies ranging from 25 to 1000 keV. Cross sections of singly charged ions are relevant to the calculation of electron yields in collisions with insulator surfaces. Calculations were performed within the continuum distorted wave-eikonal initial state method using an angular expansion in spherical harmonics and a numerical evaluation of the radial functions corresponding to both the initial (bound) and the final (continuum) states. The first Born approximation was used on an equal footing. We find that this first-order theory holds for proton energies larger than 300 keV. For comparison, we also calculate the shellwise local plasma approximation. Our results show that it gives a good account of the cross sections for neutral targets. © 2008 The American Physical Society.

Registro:

Documento: Artículo
Título:Ionization of the He, Ne, Ar, Kr, and Xe isoelectronic series by proton impact
Autor:Miraglia, J.E.; Gravielle, M.S.
Filiación:Instituto de Astronomía y Física del Espacio, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad de Buenos Aires, Casilla de Correo 67, Sucursal 28, C1428EGA Buenos Aires, Argentina
Palabras clave:Born approximation; Distortion (waves); Electric power plants; Electrolysis; Harmonic analysis; Helium; High energy physics; Ionization; Krypton; Lithium; Neon; Polynomial approximation; Protons; Xenon; Angular expansions; Charged ions; Continuum distorted waves; Cross sections; Eikonal; Electron yields; First Born approximations; First orders; Initial states; Insulator surfaces; Ionization cross sections; Isoelectronic series; Neutral targets; Numerical evaluations; Proton energies; Proton impacts; Radial functions; Spherical harmonics; Impact ionization
Año:2008
Volumen:78
Número:5
DOI: http://dx.doi.org/10.1103/PhysRevA.78.052705
Título revista:Physical Review A - Atomic, Molecular, and Optical Physics
Título revista abreviado:Phys Rev A
ISSN:10502947
CODEN:PLRAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v78_n5_p_Miraglia

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Citas:

---------- APA ----------
Miraglia, J.E. & Gravielle, M.S. (2008) . Ionization of the He, Ne, Ar, Kr, and Xe isoelectronic series by proton impact. Physical Review A - Atomic, Molecular, and Optical Physics, 78(5).
http://dx.doi.org/10.1103/PhysRevA.78.052705
---------- CHICAGO ----------
Miraglia, J.E., Gravielle, M.S. "Ionization of the He, Ne, Ar, Kr, and Xe isoelectronic series by proton impact" . Physical Review A - Atomic, Molecular, and Optical Physics 78, no. 5 (2008).
http://dx.doi.org/10.1103/PhysRevA.78.052705
---------- MLA ----------
Miraglia, J.E., Gravielle, M.S. "Ionization of the He, Ne, Ar, Kr, and Xe isoelectronic series by proton impact" . Physical Review A - Atomic, Molecular, and Optical Physics, vol. 78, no. 5, 2008.
http://dx.doi.org/10.1103/PhysRevA.78.052705
---------- VANCOUVER ----------
Miraglia, J.E., Gravielle, M.S. Ionization of the He, Ne, Ar, Kr, and Xe isoelectronic series by proton impact. Phys Rev A. 2008;78(5).
http://dx.doi.org/10.1103/PhysRevA.78.052705