Hidding, B. and Amthor, K.U. and Liesfeld, B. and Schwoerer, H. and Karsch, S. and Geissler, M. and Veisz, L. and Schmid, K. and Gallacher, J.G. and Jamison, S.P. and Jaroszynski, D. and Pretzler, G. and Sauerbrey, R. (2006) Generation of quasimonoenergetic electron bunches with 80-fs laser pulses. Physical Review Letters, 96 (10). pp. 105004-1. ISSN 0031-9007Full text not available in this repository. (Request a copy from the Strathclyde author)
Highly collimated, quasimonoenergetic multi-MeV electron bunches were generated by the interaction of tightly focused, 80-fs laser pulses in a high-pressure gas jet. These monoenergetic bunches are characteristic of wakefield acceleration in the highly nonlinear wave breaking regime, which was previously thought to be accessible only by much shorter laser pulses in thinner plasmas. In our experiment, the initially long laser pulse was modified in underdense plasma to match the necessary conditions. This picture is confirmed by semianalytical scaling laws and 3D particle-in-cell simulations. Our results show that laser-plasma interaction can drive itself towards this type of laser wakefield acceleration even if the initial laser and plasma parameters are outside the required regime.
|Keywords:||electron bunches, lasers, waves, plasmas, Plasma physics. Ionized gases, Physics and Astronomy(all)|
|Subjects:||Science > Physics > Plasma physics. Ionized gases|
|Department:||Faculty of Science > Physics|
|Depositing user:||Mr Derek Boyle|
|Date Deposited:||27 Mar 2007|
|Last modified:||10 Jun 2016 02:09|