Stuttgart 2012 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 8: Dichte Plasmen, Schwerionen- und Laserplasmen

P 8.5: Vortrag

Dienstag, 13. März 2012, 12:00–12:15, V57.02

Interaction of ultrarelativistic electron and proton bunches with dense plasmas — •Saltanat P. Sadykova¹ and Anri A. Rukhadze² — ¹Humboldt-Universität zu Berlin, Germany, Newtonstr. 15, 12489 Berlin, Germany — ²Prokhorov General Physics Institute, Russian Academy of Sciences 119991, Vavilov Str., 38., Moscow, Russia

Here we discuss the possibility of employment of ultrarelativistic electron (UREB) (A. A. Rukhadze, Zhurnal Tekhnicheskoj Fiziki. 31, Nr.10, (1961) 1236) and proton bunches (URPB) for generation of high plasma wakefields (WF) in dense plasmas due to the Cherenkov resonance plasma-bunch interaction. Recently, in the work of A. Caldwell, et al. Nature Phys. 2009 the possibility of generation of high power WFs of terra-watt amplitude using the URPB was introduced. In the present work this idea along with the employment of electron bunch is discussed at the qualitative level. Namely, we make an estimation of plasma parameters, maximum amplitude of the generated WF when the UREBs and URPBs are used and sysem length at which the maximum amplitude of the WF can be gained. On the basis of the conducted analysis, we can make the following conclusion: the wake amplitude growth produced by the bunches gets saturated with an increase of bunch energy at a quite high level. The amplitude of the electric WF produced in plasma at n_p= 10¹⁷ cm⁻³ by the UREB is of order 30 G V/m, whereas that produced by the URPB bunch is not higher than 1.3 T V/m. These magnitudes are higher than those gained with the help of contemporary quite powerful pulse lasers (10²¹⁻²² W/cm²).