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Title: Dependence of the Differential Cross Sections for Radiative-Collisional Excitation of Metastable Atomic States on the Polarization of Radiation

Abstract

We calculate the total and differential cross sections for radiative-collisional excitation of the metastable 2{sup 1}S state of He atoms at collisions with Ne atoms in external radiation fields of various frequencies and polarizations. The calculations are performed for a thermal collision energy of E = 10{sup -3} atomic units and light intensity of I = 1 MW cm{sup -2}, which corresponds to a single photon absorption by a quasi-molecule during the collision. Both the differential and total cross sections are shown to depend strongly on the relative orientation of the radiation polarization vector and the initial relative velocity vector of the colliding atoms. We analyze the azimuthal scattering asymmetry related to the orientation of the angular momentum of the absorbed photon.

Authors:
 [1]
  1. Institute of Physics, St. Petersburg State University, Peterhof, St. Petersburg, 198904 (Russian Federation)
Publication Date:
OSTI Identifier:
20702643
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 101; Journal Issue: 5; Other Information: Translated from Zhurnal Ehksperimental'noj i Teoreticheskoj Fiziki, ISSN 0044-4510, 128, 883-892 (No. 5, 2005); DOI: 10.1134/1.2149056; (c) 2005 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA); TN:
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ABSORPTION; ANGULAR MOMENTUM; ASYMMETRY; ATOM-ATOM COLLISIONS; ATOMS; EXCITATION; HELIUM; METASTABLE STATES; ORIENTATION; PHOTON-ATOM COLLISIONS; PHOTONS; POLARIZATION; SCATTERING; VECTORS; VISIBLE RADIATION

Citation Formats

Chesnokov, E.A.. Dependence of the Differential Cross Sections for Radiative-Collisional Excitation of Metastable Atomic States on the Polarization of Radiation. United States: N. p., 2005. Web. doi:10.1134/1.2149056.
Chesnokov, E.A.. Dependence of the Differential Cross Sections for Radiative-Collisional Excitation of Metastable Atomic States on the Polarization of Radiation. United States. doi:10.1134/1.2149056.
Chesnokov, E.A.. Tue . "Dependence of the Differential Cross Sections for Radiative-Collisional Excitation of Metastable Atomic States on the Polarization of Radiation". United States. doi:10.1134/1.2149056.
@article{osti_20702643,
title = {Dependence of the Differential Cross Sections for Radiative-Collisional Excitation of Metastable Atomic States on the Polarization of Radiation},
author = {Chesnokov, E.A.},
abstractNote = {We calculate the total and differential cross sections for radiative-collisional excitation of the metastable 2{sup 1}S state of He atoms at collisions with Ne atoms in external radiation fields of various frequencies and polarizations. The calculations are performed for a thermal collision energy of E = 10{sup -3} atomic units and light intensity of I = 1 MW cm{sup -2}, which corresponds to a single photon absorption by a quasi-molecule during the collision. Both the differential and total cross sections are shown to depend strongly on the relative orientation of the radiation polarization vector and the initial relative velocity vector of the colliding atoms. We analyze the azimuthal scattering asymmetry related to the orientation of the angular momentum of the absorbed photon.},
doi = {10.1134/1.2149056},
journal = {Journal of Experimental and Theoretical Physics},
number = 5,
volume = 101,
place = {United States},
year = {Tue Nov 01 00:00:00 EST 2005},
month = {Tue Nov 01 00:00:00 EST 2005}
}
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