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Spin polarization of electrons by ultraintense lasers

D. Del Sorbo ; D. Seipt ; Tom Blackburn (Institutionen för fysik, Teoretisk fysik (Chalmers)) ; A. G. R. Thomas ; C. D. Murphy ; J. G. Kirk ; C. P. Ridgers
Physical Review A (2469-9926). Vol. 96 (2017), 4,
[Artikel, refereegranskad vetenskaplig]

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%.



Denna post skapades 2017-11-06. Senast ändrad 2017-11-06.
CPL Pubid: 252943

 

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Institutioner (Chalmers)

Institutionen för fysik, Teoretisk fysik (Chalmers)

Ämnesområden

Atom- och molekylfysik och optik

Chalmers infrastruktur