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Experimental observation of direct particle acceleration by stimulated emission of radiation
Samer Banna1, Valery Berezovsky, Levi Schächter
1Department of Electrical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel. sbanna@bnl.gov
Abstract:
We report the first experimental evidence for direct particle acceleration by stimulated emission of radiation. In the framework of this proof-of-principle experiment, a 45 MeV electron macrobunch was modulated by a high-power CO2 laser and then injected into an excited CO2 gas mixture. The emerging microbunches experienced a 0.15% relative change in the kinetic energy, in a less than 40 cm long interaction region. According to our experimental results, a fraction of these electrons have gained more than 200 keV each, implying that such an electron has undergone an order of magnitude of 2 x 10(6) collisions of the second kind.
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