Space Plasma Phenomena: Laboratory Modeling

Krafft, C.; Starodubtsev, M.

doi:10.1007/978-94-011-4728-6_9

Cited by 2 publications

(1 citation statement)

References 140 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This experiment reported the first observation of whistlers emitted far from the gun (at a distance around 200 km) during the electron gun operation. It is worth mentioning that extensive analytical studies on conditions for whistler observations by mother-daughter active experiments have been performed recently [13] and that laboratory experiments have been conducted in order to test the feasibility and the operation regimes of active experiments such as mentioned above, as well as to interpret their observations [14]. In particular, the laboratory modelling of controlled modulated beam injection has recently demonstrated the generation of resonant Cherenkov and Doppler whistler emissions by the beam, as well as of non-resonant transition radiation from the injection region [15,16].…”

Section: Introductionmentioning

confidence: 99%

Electron beam interaction with space plasmas

Krafft¹,

Volokitin²

1999

Plasma Phys. Control. Fusion

View full text Add to dashboard Cite

Active space experiments involving the controlled injection of electron beams and the formation of artificially generated currents can provide in many cases a calibration of natural phenomena connected with the dynamic interaction of charged particles with fields. They have a long history beginning from the launches of small rockets with electron guns in order to map magnetic fields lines in the Earth's magnetosphere or to excite artificial auroras. Moreover, natural beams of charged particles exist in many space and astrophysical plasmas and were identified in situ by several satellites; a few examples are beams connected with solar bursts, planetary foreshocks or suprathermal fluxes traveling in planetary magnetospheres.Many experimental and theoretical works have been performed in order to interpret or plan space experiments involving beam injection as well as to understand the physics of wave-particle interaction, as wave radiation, beam dynamics and background plasma modification. Recently, theoretical studies of the nonlinear evolution of a thin monoenergetic electron beam injected in a magnetized plasma and interacting with a whistler wave packet have led to new results. The influence of an effective dissipation process connected with whistler wave field leakage out of the beam volume to infinity (that is, effective radiation outside the beam) on the nonlinear evolution of beam electrons distribution in phase space has been studied under conditions relevant to active space experiments and related laboratory modelling. The beam-waves system's evolution reveals the formation of stable nonlinear structures continuously decelerated due to the effective friction imposed by the strongly dissipated waves. The nonlinear interaction between the electron bunches and the wave packet are discussed in terms of dynamic energy exchange, particle trapping, slowing down of the beam, wave dissipation and quasi-linear diffusion.

show abstract