Threshold behavior of the Jost function for the atomic polarization potential

We evaluate the [Formula Presented]-wave Jost function for the polarization potential and calculate its effective range expansion for [Formula Presented] up to the order [Formula Presented] We investigate not only the phase but also the modulus of the Jost function, generalizing previous works for t...

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Publicado: 2002
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v65_n6_p7_Macri
http://hdl.handle.net/20.500.12110/paper_10502947_v65_n6_p7_Macri
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_10502947_v65_n6_p7_Macri
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spelling paper:paper_10502947_v65_n6_p7_Macri2023-06-08T16:02:00Z Threshold behavior of the Jost function for the atomic polarization potential We evaluate the [Formula Presented]-wave Jost function for the polarization potential and calculate its effective range expansion for [Formula Presented] up to the order [Formula Presented] We investigate not only the phase but also the modulus of the Jost function, generalizing previous works for the expansion up to the order [Formula Presented] of the s-wave phase shift. We discuss the validity domain of this generalized expansion for the interaction of an electron with a Helium atom in any of its three long-lived He states, i.e., [Formula Presented] [Formula Presented] and [Formula Presented] Even though this expansion is shown to be appropriate for most of the applications in electron-atom collisions, we propose here a more precise and simpler approach that provides much better results in a broader energy range when comparing with elaborated ab initio calculations. © 2002 The American Physical Society. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v65_n6_p7_Macri http://hdl.handle.net/20.500.12110/paper_10502947_v65_n6_p7_Macri
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We evaluate the [Formula Presented]-wave Jost function for the polarization potential and calculate its effective range expansion for [Formula Presented] up to the order [Formula Presented] We investigate not only the phase but also the modulus of the Jost function, generalizing previous works for the expansion up to the order [Formula Presented] of the s-wave phase shift. We discuss the validity domain of this generalized expansion for the interaction of an electron with a Helium atom in any of its three long-lived He states, i.e., [Formula Presented] [Formula Presented] and [Formula Presented] Even though this expansion is shown to be appropriate for most of the applications in electron-atom collisions, we propose here a more precise and simpler approach that provides much better results in a broader energy range when comparing with elaborated ab initio calculations. © 2002 The American Physical Society.
title Threshold behavior of the Jost function for the atomic polarization potential
spellingShingle Threshold behavior of the Jost function for the atomic polarization potential
title_short Threshold behavior of the Jost function for the atomic polarization potential
title_full Threshold behavior of the Jost function for the atomic polarization potential
title_fullStr Threshold behavior of the Jost function for the atomic polarization potential
title_full_unstemmed Threshold behavior of the Jost function for the atomic polarization potential
title_sort threshold behavior of the jost function for the atomic polarization potential
publishDate 2002
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v65_n6_p7_Macri
http://hdl.handle.net/20.500.12110/paper_10502947_v65_n6_p7_Macri
_version_ 1768545985370259456

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