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Title: Theoretical study of sodium and potassium resonance lines pressure broadened by helium atoms

Abstract

We perform fully quantum mechanical calculations in the binary approximation of the emission and absorption profiles of the sodium 3s-3p and potassium 4s-4p resonance lines under the influence of a helium perturbing gas. We use carefully constructed potential energy surfaces and transition dipole moments to compute the emission and absorption coefficients at temperatures from 158 to 3000 K. Contributions from quasibound states are included. The resulting red and blue wing profiles agree well with previous theoretical calculations and with experimental measurements.

Authors:
; ;  [1]
  1. ITAMP, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138 (United States)
Publication Date:
OSTI Identifier:
20786696
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 73; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevA.73.012506; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ABSORPTION; APPROXIMATIONS; ATOMS; DIPOLE MOMENTS; EMISSION; HELIUM; POTASSIUM; POTENTIAL ENERGY; QUANTUM MECHANICS; QUASIBOUND STATE; RESONANCE; SODIUM; SURFACES

Citation Formats

Zhu, Cheng, Babb, James F., and Dalgarno, Alex. Theoretical study of sodium and potassium resonance lines pressure broadened by helium atoms. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.0.
Zhu, Cheng, Babb, James F., & Dalgarno, Alex. Theoretical study of sodium and potassium resonance lines pressure broadened by helium atoms. United States. doi:10.1103/PHYSREVA.73.0.
Zhu, Cheng, Babb, James F., and Dalgarno, Alex. Sun . "Theoretical study of sodium and potassium resonance lines pressure broadened by helium atoms". United States. doi:10.1103/PHYSREVA.73.0.
@article{osti_20786696,
title = {Theoretical study of sodium and potassium resonance lines pressure broadened by helium atoms},
author = {Zhu, Cheng and Babb, James F. and Dalgarno, Alex},
abstractNote = {We perform fully quantum mechanical calculations in the binary approximation of the emission and absorption profiles of the sodium 3s-3p and potassium 4s-4p resonance lines under the influence of a helium perturbing gas. We use carefully constructed potential energy surfaces and transition dipole moments to compute the emission and absorption coefficients at temperatures from 158 to 3000 K. Contributions from quasibound states are included. The resulting red and blue wing profiles agree well with previous theoretical calculations and with experimental measurements.},
doi = {10.1103/PHYSREVA.73.0},
journal = {Physical Review. A},
number = 1,
volume = 73,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2006},
month = {Sun Jan 15 00:00:00 EST 2006}
}