Demonstration of quasi-monoenergetic electron-beam generation in laser-driven plasma acceleration

Miura, Eisuke; Koyama, Kazuyoshi; Kato, Susumu; Saito, Naoaki; Adachi, Masahiro; Kawada, Yoichi; Nakamura, Tatsufumi; Tanimoto, Mitsumori
June 2005
Applied Physics Letters;6/20/2005, Vol. 86 Issue 25, p251501
Academic Journal
The generation of a quasi-monoenergetic electron beam in laser-driven plasma acceleration is reported. A monoenergetic electron beam with an energy of 7 MeV was emitted from a high-density plasma (electron density >1020 cm-3) produced by a 2 TW 50 fs laser pulse. The divergence of the monoenergetic beam was ±1.2°. The first Stokes satellite peak of stimulated forward Raman scattering was observed in the spectrum of the light transmitted through the plasma. The plasma wave was excited in the region of which electron density was around 1.3×1020 cm-3. The acceleration length was estimated to be 500 μm from the length of the side-scattered light image. It is considered that the monoenergetic beam generation is due to the matching of the acceleration length to the dephasing length determined by the velocity difference between the accelerated electrons and the plasma wave.


Related Articles

  • Hierarchy of beam plasma instabilities up to high beam densities for fast ignition scenario. Bret, A.; Deutsch, C. // Physics of Plasmas;Aug2005, Vol. 12 Issue 8, p082704 

    The hierarchy of electromagnetic instabilities suffered by a relativistic electron beam passing through a plasma is investigated. The fluid approximation is used and beam densities up to the plasma one are considered. The hierarchy between instabilities is established in terms of two parameters...

  • A laser-plasma accelerator producing monoenergetic electron beams. Faure, J.; Glinec, Y.; Pukhov, A.; Kiselev, S.; Gordienko, S.; Lefebvre, E.; Rousseau, J.-P.; Burgy, F.; Malka, V. // Nature;9/30/2004, Vol. 431 Issue 7008, p541 

    Particle accelerators are used in a wide variety of fields, ranging from medicine and biology to high-energy physics. The accelerating fields in conventional accelerators are limited to a few tens of MeV?m-1, owing to material breakdown at the walls of the structure. Thus, the production of...

  • High-quality electron beams from a laser wakefield accelerator using plasma-channel guiding. Geddes, C.G.R.; Toth, Cs.; van Tilborg, J.; Esarey, E.; Schroeder, C.B.; Bruhwiler, D.; Nieter, C.; Cary, J.; Leemans, W.P. // Nature;9/30/2004, Vol. 431 Issue 7008, p538 

    Laser-driven accelerators, in which particles are accelerated by the electric field of a plasma wave (the wakefield) driven by an intense laser, have demonstrated accelerating electric fields of hundreds of GV?m-1 (refs 1-3). These fields are thousands of times greater than those achievable in...

  • Monoenergetic beams of relativistic electrons from intense laser-plasma interactions. Mangles, S.P.O.; Murphy, C.D.; Najmudin, Z.; Thomas, A.G.R.; Collier, J.L.; Dangor, A.E.; Divall, E.J.; Foster, P.S.; Gallacher, J.C.; Hooker, C.J.; Jaroszynski, D.A.; Langley, A.J.; Mori, W.B.; Norreys, P.A.; Tsung, F.S.; Viskup, R.; Walton, B.R.; Krushelnick, K. // Nature;9/30/2004, Vol. 431 Issue 7008, p535 

    High-power lasers that fit into a university-scale laboratory can now reach focused intensities of more than 1019?W?cm-2 at high repetition rates. Such lasers are capable of producing beams of energetic electrons, protons and?-rays. Relativistic electrons are generated through the breaking of...

  • Observation of Fine Particle Charges irradiated by UV-Light and Electron Beam. Ando, Ayumi; Kawakami, Akihiro; Yokota, Toshiaki // AIP Conference Proceedings;2005, Vol. 799 Issue 1, p526 

    Fine particle charges are determined under various circumstances such as plasma environment; photo-emission, electron, ion, and friction. It is very important to reveal charging mechanisms for investigating fine particle plasmas in the space and laboratory. The fine particles of several...

  • Neutron Production in a Picosecond Laser Plasma at a Radiation Intensity of 3×1017W/cm2. Belyaev, V.S.; Vinogradov, V.I.; Kurilov, A.S.; Matafonov, A.P.; Andrianov, V.P.; Ignat'ev, G.N.; Faenov, A.Ya.; Pikuz, T.A.; Skobelev, I.Yu.; Magunov, A.I.; Pikuz Jr, S.A.; Sharkov, B.Yu. // Journal of Experimental & Theoretical Physics;Jun2004, Vol. 98 Issue 6, p1133 

    Neutron production as a result of the reaction 2H(d,n)3He in a picosecond laser plasma is reported. A considerable neutron yield of 5×104 per pulse is obtained for the first time in a picosecond laser plasma on the surface of a solid deuterated target at laser radiation intensity of...

  • A compact double-pass Raman backscattering amplifier/compressor. Ren, J.; Li, S.; Morozov, A.; Suckewer, S.; Yampolsky, N. A.; Malkin, V. M.; Fisch, N. J. // Physics of Plasmas;May2008, Vol. 15 Issue 5, p056702 

    The enhancement of stimulated Raman backscattering (SRBS) amplification was demonstrated by introducing a plasma density gradient along the pump and the seed interaction path and by a novel double-pass design. The energy transfer efficiency was significantly improved to a level of 6.4%. The seed...

  • Suppression of transverse proton beam divergence by controlled electron cloud in laser-plasma interactions. Sonobe, R.; Kawata, S.; Miyazaki, S.; Nakamura, M.; Kikuchi, T. // Physics of Plasmas;Jul2005, Vol. 12 Issue 7, p073104 

    In this paper, suppression of a transverse proton divergence is focused by using a controlled electron cloud. When an intense short pulse laser illuminates a foil plasma target, first electrons are accelerated and they form a strong electrostatic field at the target surface, then ions are...

  • Ultrashort laser pulses and ultrashort electron bunches generated in relativistic laser-plasma interaction. Faure, J.; Glinec, Y.; Gallot, G.; Malka, V. // Physics of Plasmas;May2006, Vol. 13 Issue 5, p055501 

    An experimental study of the interaction of ultrashort laser pulses with underdense plasmas in the relativistic regime is presented. A parameter regime of particular interest was found: the so-called bubble regime. In this regime, the laser pulse is focused to relativistic intensities and its...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics