Enhanced resonant acceleration of electrons from intense laser interaction with density-attenuating plasma

Journal Article · Thu Jan 15 00:00:00 EST 2009 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3057445· OSTI ID:21272471

Niu, H Y ^[1]; He, X T; Zhou, C T ^[2]; Qiao, Bin ^[3]

---

1. Graduate School of China Academy of Engineering Physics, P.O. Box 2101, Beijing 100088 (China)
2. Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100088 (China)
3. Department of Physics and Astronomy, Center for Plasma Physics, Queen's University Belfast, Belfast BT7 1NN (United Kingdom)

An enhanced resonant acceleration scheme for electrons by intense circularly polarized laser pulse in a plasma with slowly attenuating density is proposed. As it propagates, the phase velocity and Doppler-shifted frequency of the laser both gradually decrease, so that the electrons moving in the combined laser and spontaneous fields can retain betatron resonance for a rather long time and effectively acquire energy from the laser. The theoretical analysis is verified by test-particle numerical calculations. It is shown that well-collimated GeV electron beams with very low beam divergence can be produced.

• OSTI ID: 21272471
• Journal Information: Physics of Plasmas, Vol. 16, Issue 1; Other Information: DOI: 10.1063/1.3057445; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATION
BEAM-PLASMA SYSTEMS
ELECTRON BEAMS
ELECTRONS
LASERS
PLASMA
PLASMA DENSITY