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Abstract:

We have calculated, with a finite difference method, a numerical solution of the time-dependent Schrödinger equation in the impact parameter theory of ion-atom collisions. We present results for excitation of the n = 2 level of atomic hydrogen by fully stripped ions with charge up to 30. Though the total excitation cross section saturates for large projectile charges, no similar behaviour is observed in the impact-parameter-dependent probabilities. The latter show a maximum that shifts toward larger impact parameters and decreases in magnitude as the projectile charge increases. Thus we prove the validity of the dipolar approximation and hence justify the previously observed scaling rules. The symmetric eikonal approximation gives close agreement with the results of our numerical solution. © 1992 IOP Publishing Ltd.

Registro:

Documento: Artículo
Título:Excitation mechanism in collisions of hydrogen atoms with highly charged ions
Autor:Rodríguez, V.D.; Salin, A.
Filiación:Laboratoire des Collisions Atomiques, Unité Propre de Recherche 260 du CNRS, Universite Bordeaux I, 351 Cours de la Libération, Talence, 33405, France
Instituto de Astmnomía y Física del Espacio, Casilla de Correos 67, Sucursal 28, Buenos Aires, 1428, Argentina
Palabras clave:Atomic hydrogen; Charge-up; Dipolar approximations; Excitation cross section; Excitation mechanisms; Highly charged ions; Hydrogen atoms; Impact-parameter; Ion atom collisions; Numerical solution; Projectile charge; Scaling rules; Symmetric eikonal approximation; Time dependent Schrodinger equation; Hydrogen; Projectiles
Año:1992
Volumen:25
Número:18
Página de inicio:L467
Página de fin:L474
DOI: http://dx.doi.org/10.1088/0953-4075/25/18/002
Título revista:Journal of Physics B: Atomic, Molecular and Optical Physics
Título revista abreviado:J Phys B At Mol Opt Phys
ISSN:09534075
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09534075_v25_n18_pL467_Rodriguez

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Citas:

---------- APA ----------
Rodríguez, V.D. & Salin, A. (1992) . Excitation mechanism in collisions of hydrogen atoms with highly charged ions. Journal of Physics B: Atomic, Molecular and Optical Physics, 25(18), L467-L474.
http://dx.doi.org/10.1088/0953-4075/25/18/002
---------- CHICAGO ----------
Rodríguez, V.D., Salin, A. "Excitation mechanism in collisions of hydrogen atoms with highly charged ions" . Journal of Physics B: Atomic, Molecular and Optical Physics 25, no. 18 (1992) : L467-L474.
http://dx.doi.org/10.1088/0953-4075/25/18/002
---------- MLA ----------
Rodríguez, V.D., Salin, A. "Excitation mechanism in collisions of hydrogen atoms with highly charged ions" . Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 25, no. 18, 1992, pp. L467-L474.
http://dx.doi.org/10.1088/0953-4075/25/18/002
---------- VANCOUVER ----------
Rodríguez, V.D., Salin, A. Excitation mechanism in collisions of hydrogen atoms with highly charged ions. J Phys B At Mol Opt Phys. 1992;25(18):L467-L474.
http://dx.doi.org/10.1088/0953-4075/25/18/002