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- Title
Directional transport of fast electrons at the front target surface irradiated by intense femtosecond laser pulses with preformed plasma.
- Authors
Lin, X.X.; Li, Y.T.; Liu, B.C.; Liu, F.; Du, F.; Wang, S.J.; Chen, L.M.; Zhang, L.; Liu, X.; Liu, X.L.; Wang, Z.H.; Ma, J.L.; Lu, X.; Dong, Q.L.; Wang, W.M.; Sheng, Z.M.; Wei, Z.Y.; Zhang, J.
- Abstract
The effects of laser incidence angle on lateral fast electron transport at front target surface, when a plasma is preformed, irradiated by intense (>1018 W/cm2) laser pulses, are studied by Kα imaging technique and electron spectrometer. A horizontally asymmetric Kα halo, resulting from directional lateral electron transport and energy deposition, is observed for a large incidence angle (70°). Moreover, a group of MeV high energy electrons is emitted along target surface. It is believed that the deformed preplasma and the asymmetrical distribution of self-generated magnetic field, at large incidence angle, play an important role in the directional lateral electron transport.
- Subjects
ELECTRON transport; SURFACES (Technology); IRRADIATION; FEMTOSECOND lasers; PLASMA gases; LASER-plasma interactions; ELECTRON spectroscopy
- Publication
Laser & Particle Beams, 2012, Vol 30, Issue 1, p39
- ISSN
0263-0346
- Publication type
Article
- DOI
10.1017/S0263034611000668