Electron energy boosting in laser-wake-field acceleration with external magnetic field Bapprox1 T and laser prepulses

Journal Article · Mon Mar 22 00:00:00 EDT 2010 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3371709· OSTI ID:21347326

Hosokai, Tomonao ^[1]; Zhidkov, Alexei ^[2]; Yamazaki, Atsushi ^[3]; Mizuta, Yoshio ^[4]; Uesaka, Mitsuru ^[5]; Kodama, Ryosuke ^[6]

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1. Photon Pioneers Center, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan and Japan Science and Technology Agency (JST), CREST, 2-1, Yamadaoka, Suita, Osaka 565-0871 (Japan)
2. Central Research Institute of Electric Power Industry, 2-6-1 Nagasaka, Yokosuka, Kanagawa 240-0196 (Japan)
3. Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603 (Japan)
4. Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871 (Japan)
5. Graduate School of Engineering, University of Tokyo, 22-2 Shirane-shirakata, Tokai, Naka, Ibaraki 319-1188 (Japan)
6. Photon Pioneers Center, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871 (Japan) and Japan Science and Technology Agency (JST), CREST, 2-1, Yamadaoka, Suita, Osaka 565-0871 (Japan)

Hundred-mega-electron-volt electron beams with quasi-monoenergetic distribution, and a transverse geometrical emittance as small as approx0.02 pi mm mrad are generated by low power (7 TW, 45 fs) laser pulses tightly focused in helium gas jets in an external static magnetic field, Bapprox1 T. Generation of monoenergetic beams strongly correlates with appearance of a straight, at least 2 mm length plasma channel in a short time before the main laser pulse and with the energy of copropagating picosecond pedestal pulses (PPP). For a moderate energy PPP, the multiple or staged electron self-injection in the channel gives several narrow peaks in the electron energy distribution.

• OSTI ID: 21347326
• Journal Information: Applied Physics Letters, Vol. 96, Issue 12; Other Information: DOI: 10.1063/1.3371709; (c) 2010 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
43 PARTICLE ACCELERATORS
ACCELERATION
ELECTRON BEAMS
ELECTRON SOURCES
ELECTRONS
ENERGY SPECTRA
HELIUM
LASERS
MAGNETIC FIELDS
PULSES
WAKEFIELD ACCELERATORS
ACCELERATORS
BEAMS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
FLUIDS
GASES
LEPTON BEAMS
LEPTONS
LINEAR ACCELERATORS
NONMETALS
PARTICLE BEAMS
PARTICLE SOURCES
RADIATION SOURCES
RARE GASES
SPECTRA