Journal
PHYSICAL REVIEW LETTERS
Volume 111, Issue 13, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.135002
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Funding
- European Research Council (PARIS ERC) [226424]
- EuCARD/ANAC
- EC FP7 [227579]
- EuCARD2/ANAC2 EC FP7 [312453]
- Agence National pour la Recherche [FENICS ANR-12-JS04-0004-01]
- European Research Council (ERC) [226424] Funding Source: European Research Council (ERC)
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The transverse properties of an electron beam are characterized by two quantities, the emittance which indicates the electron beam extent in the phase space and the angular momentum which allows for nonplanar electron trajectories. Whereas the emittance of electron beams produced in a laser-plasma accelerator has been measured in several experiments, their angular momentum has been scarcely studied. It was demonstrated that electrons in a laser-plasma accelerator carry some angular momentum, but its origin was not established. Here we identify one source of angular-momentum growth and we present experimental results showing that the angular-momentum content evolves during the acceleration.
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