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Spin polarization of electrons by ultraintense lasers
- Del Sorbo, D. (author)
- Seipt, D. (author)
-
- Blackburn, Tom, 1989 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Thomas, A. G. R. (author)
- Murphy, C. D. (author)
- Kirk, J. G. (author)
- Ridgers, C. P. (author)
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- (creator_code:org_t)
- 2017
- 2017
- English.
- In: Physical Review A. - 2469-9934 .- 2469-9926. ; 96:4
- Journal article (peer-reviewed)
Abstract
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- Electrons in plasmas produced by next-generation ultraintense lasers (I > 5 x 10(22)W/cm(2)) can be spin polarized to a high degree (10%-70%) by the laser pulses on a femtosecond time scale. This is due to electrons undergoing spin-flip transitions as they radiate gamma-ray photons, preferentially spin polarizing in one direction. Spin polarization can modify the radiation reaction force on the electrons, which differs by up to 30% for opposite spin polarizations. Consequently, the polarization of the radiated gamma-ray photons is also modified: the relative power radiated in the sigma and pi components increases and decreases by up to 30%, respectively, potentially reducing the rate of pair production in the plasma by up to 30%.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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