X-Ray Line Polarization of the K-shell Resonance Line Emission of Heliumlike and Lithiumlike Sulfur at Relativistic Electron Impact Energies
We have measured the polarization of the heliumlike sulfur resonance line 1s2p {sup 1}P{sub 1} {yields} 1s{sup 2} {sup 1}S{sub 0}, and of the blend of the lithium-like sulfur resonance lines 1s2s2p {sup 2}P{sub 3/2} {yields} 1s{sup 2} 2s {sup 2}S{sub 1/2} and 1s2s2p {sup 2}P{sub 1/2} {yields} 1s{sup 2}2s {sup 2}S{sub 1/2} as a function of electron beam energy from near threshold to 144 KeV. These lines were excited with the LLNL high-energy electron beam ion trap and measured using a newly modified two-crystal technique. Our results test polarization predictions in an energy regime where few empirical results have been reported. We also present calculations of the polarization using two different methods, and good agreement is obtained.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15014022
- Report Number(s):
- UCRL-PROC-202750; TRN: US0801336
- Resource Relation:
- Conference: Presented at: The Fourth International Plasma Polarization Spectroscopy Symposium, Kyoto, Japan, Feb 03 - Feb 06, 2004
- Country of Publication:
- United States
- Language:
- English
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