Recent progress in particle acceleration from the interaction between thin-foil targets and J-KAREN laser pulses
- Advanced Photon Research Center, Kansai Photon Science Institute, Japan Atomic Energy Agency, 8-1 Umemi-dai, Kizugawa, Kyoto, 619-0215 (Japan)
From the interaction between the high-contrast ({approx}more than 10{sup 10}) 130 TW Ti:sapphire laser pulse and Stainless Steel-2.5 um-thick tape target, proton beam with energies up to 23 MeV with the conversion efficiency of {approx}1% is obtained. After plasma mirror installation for contrast improvement, from the interaction between the 30 TW laser pulse and thin-foil target installed on the target holder with the hole whose shape is associated with the design of the well-known Wehnelt electrode of electron-gun, a 7 MeV intense proton beam is controlled dynamically and energy selected by the self-induced quasi-static electric field on the target holder. From the highly divergent beam having continuous spectrum, which are the typical features of the laser-driven proton beams from the interactions between the short-pulse laser and solid target, the spatial distribution of 7 MeV proton bunch is well manipulated to be focused to an small spots with an angular distribution of {approx}10 mrad. The number of protons included in the bunch is >10{sup 6}.
- OSTI ID:
- 22069065
- Journal Information:
- AIP Conference Proceedings, Vol. 1465, Issue 1; Conference: 3. international symposium on laser-driven relativistic plasmas applied to science, energy, industry, and medicine, Kyoto (Japan), 30 May - 2 Jun 2011; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATION
ACCELERATORS
ANGULAR DISTRIBUTION
BEAM BUNCHING
BEAM PRODUCTION
ELECTRIC FIELDS
ELECTRON GUNS
FOILS
LASER RADIATION
LASER TARGETS
LASER-PRODUCED PLASMA
LIGHT TRANSMISSION
MEV RANGE
PLASMA GUNS
PROTON BEAMS
STAINLESS STEELS