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Phys. Rev. A 76, 012716 (2007) [10 pages]

Cascade effects on the polarization of He-like Fe 1s2l-1s2 x-ray line emission

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Peter Hakel1, Roberto C. Mancini1, Clifford Harris1,*, Paul Neill1, Peter Beiersdorfer2, George Csanak1,3, and Hong Lin Zhang3
1Department of Physics, University of Nevada, Reno, Nevada 89557, USA
2Lawrence Livermore National Laboratory, Livermore, California 94550, USA
3Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA

Received 20 December 2006; published 23 July 2007

We calculate x-ray line polarization degrees for cases with axial symmetry using a collisional-radiative magnetic-sublevel atomic kinetics model and the properties of multipole radiation fields. This approach is well suited for problems where the alignment is determined by the competition between many atomic processes. We benchmark this method against polarization measurements performed at the Livermore electron beam ion trap, and we study the 3-to-2 cascade effects on the polarization of 2-to-1 lines in He-like Fe.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.76.012716
DOI:
10.1103/PhysRevA.76.012716
PACS:
34.80.Dp, 34.80.Lx, 32.70.Cs, 32.80.Dz

*Present address: Gulf Coast Community College, Panama City, Florida 32401, USA.

 
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