Development of Laser-Driven Ion Source

We have studied the ion emission from a thin-foil target irradiated by p, s and circularly polarized laser pulses in order to clarify the mechanism of ion acceleration using a Titanium Sapphire laser with a peak irradiance of 3 x 1018 W/cm2. A tape target driver provided a fresh surface of a tantalu...

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Bibliographic Details
Main Authors: Daido, H, Nishiuchi, M, Fukumi, A, Li, Z, Sagisaka, A, Ogura, K, Orimo, S, Kado, M, Hayashi, Y, Mori, M, Nagashima, A, Pirozhkov, A, Bulanov, S, Esirkepov, T, Kimura, T, Tajima, T, Nemoto, K, Oishi, Y, Nayuki, T
Format: Conference Proceeding
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATION
ENERGY SPECTRA
ION EMISSION
ION SOURCES
IONS
LASER RADIATION
LASERS
MICA
MONOCHROMATIC RADIATION
PLASMA HEATING
PLASMA PRODUCTION
POLARIZATION
PROTON BEAMS
PULSES
RADIANT FLUX DENSITY
ROTATION
TANTALUM
TITANIUM
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Summary:We have studied the ion emission from a thin-foil target irradiated by p, s and circularly polarized laser pulses in order to clarify the mechanism of ion acceleration using a Titanium Sapphire laser with a peak irradiance of 3 x 1018 W/cm2. A tape target driver provided a fresh surface of a tantalum foil with the thickness of 3 micro-meters during the measurements. The laser polarization was changed from p to s- and to circular polarization by using the 1/2 and 1/4 wave plates made of mica. To obtain the ion energy spectra and to resolve the ion species, a Thomson parabola ion analyzer was placed behind the target along the target normal direction. The energy spectra close to 1MeV were obtained. Possible explanation of the experimental result is described. Finally, we describe the phase rotation technique to obtain a monochromatic proton beam.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.2195212