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Polarization of atomic radiative transitions in crossed electric and magnetic fields

Published online by Cambridge University Press:  09 March 2009

V.L. Jacobs
Affiliation:
Condensed Matter and Radiation Sciences Division, Code 6693, Naval Research Laboratory, Washington, DC 20375–5345
A.B. Filuk
Affiliation:
Target and Analysis Theory Department, Organization 1271, MS 1187, Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185–1187

Abstract

A density-matrix approach is under development for the investigation of the angular distribution and polarization of atomic radiative emissions in crossed quasi-static electric and magnetic fields. Particular interest has centered on applications to spectroscopic observations in the intense fields of the high-power light-ion inertial fusion device PBFA II at Sandia National Laboratories, and to magnetic field measurements in tokamak plasmas. Noteworthy features of our general density-matrix analysis include allowances for the mixing of both the bound and continuum field-free atomic eigenstates in an arbitrary arrangement of electric and magnetic fields, and for the possible coherent excitation of the nearly degenerate field-dependent atomic substates that produce the overlapping Stark-Zeeman components. The influence of directed collisional excitation may also be taken into account. From the angular-momentum selection rules, specific results have been obtained for observation of polarized radiative emissions in the direction of the magnetic field.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1995

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