Hot electron generation from intense laser irradiation of microtipped cone and wedge targets

Journal Article · Thu May 15 00:00:00 EDT 2008 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2912457· OSTI ID:21120309

Cho, B I; Dyer, G M; Kneip, S; Symes, D R; Bernstein, A C; Ditmire, T ^[1]; Pikuz, S ^[2]; Sentoku, Y; Renard-Le Galloudec, N; Cowan, T E ^[3]

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1. Texas Center for High Intensity Laser Science, Department of Physics, University of Texas, Austin, Texas 78712-0263 (United States)
2. Department of Physics, M. V. Lomonosov Moscow State University, Leninskie Gory, Moscow 119992 (Russian Federation)
3. Nevada Terawatt Facility, Department of Physics, University of Nevada, Reno, Nevada 89521-0042 (United States)

X-ray production from the interaction of femtosecond laser pulses focused to relativistic intensity into re-entrant targets etched into silicon has been investigated. K{sub {alpha}} and hard x-ray yields were compared when the laser was focused into pyramidal shaped cone targets and wedge shaped targets. Hot electron production is highest in the wedge targets irradiated with transverse polarization, though K{sub {alpha}} is maximized with wedge targets and parallel polarization. These results are explained with particle-in-cell simulations.

• OSTI ID: 21120309
• Journal Information: Physics of Plasmas, Vol. 15, Issue 5; Other Information: DOI: 10.1063/1.2912457; (c) 2008 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
CONES
ELECTRONS
HARD X RADIATION
IRRADIATION
LASER RADIATION
LASERS
PLASMA
PLASMA PRODUCTION
PLASMA SIMULATION
POLARIZATION
PULSES
RELATIVISTIC RANGE
SILICON
X-RAY SOURCES
YIELDS