Excitation mechanism in collisions of hydrogen atoms with highly charged ions

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...

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Detalles Bibliográficos
Autores principales:	Rodríguez, V.D., Salin, A.
Formato:	JOUR
Materias:	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
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_09534075_v25_n18_pL467_Rodriguez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_09534075_v25_n18_pL467_Rodriguez
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spelling	todo:paper_09534075_v25_n18_pL467_Rodriguez2023-10-03T15:50:52Z Excitation mechanism in collisions of hydrogen atoms with highly charged ions Rodríguez, V.D. Salin, A. 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 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09534075_v25_n18_pL467_Rodriguez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	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
spellingShingle	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 Rodríguez, V.D. Salin, A. Excitation mechanism in collisions of hydrogen atoms with highly charged ions
topic_facet	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
description	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.
format	JOUR
author	Rodríguez, V.D. Salin, A.
author_facet	Rodríguez, V.D. Salin, A.
author_sort	Rodríguez, V.D.
title	Excitation mechanism in collisions of hydrogen atoms with highly charged ions
title_short	Excitation mechanism in collisions of hydrogen atoms with highly charged ions
title_full	Excitation mechanism in collisions of hydrogen atoms with highly charged ions
title_fullStr	Excitation mechanism in collisions of hydrogen atoms with highly charged ions
title_full_unstemmed	Excitation mechanism in collisions of hydrogen atoms with highly charged ions
title_sort	excitation mechanism in collisions of hydrogen atoms with highly charged ions
url	http://hdl.handle.net/20.500.12110/paper_09534075_v25_n18_pL467_Rodriguez
work_keys_str_mv	AT rodriguezvd excitationmechanismincollisionsofhydrogenatomswithhighlychargedions AT salina excitationmechanismincollisionsofhydrogenatomswithhighlychargedions
_version_	1807320794422837248

Excitation mechanism in collisions of hydrogen atoms with highly charged ions

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