Calculation of the external ?-radiation dosage due to fallout of radioactive fission products

Gedeonov, L.I.; Shvedov, V.P.; Yakovleva, G. V.

doi:10.1007/bf01489563

Cited by 1 publication

(1 citation statement)

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“…One of the brightest examples is electron acceleration in radiation belts, which results in aurora formation [1,2] and represents a real hazard for artificial satellites in activity [3]. Assuming that the wave spectrum is wide enough and the wave intensity is sufficiently low, one can model the wave-particle resonant interactions using quasi-linear theory [4][5][6][7] generalized for systems with inhomogeneous magnetic field and background plasma [8,9]. However, various recent spacecraft observations in the near-Earth plasma environment [10][11][12][13][14], laboratory experiments [15,16], and inertial confinement fusion simulations and experiments [17][18][19] have demonstrated that the applicability of quasi-linear theory is often questionable, because electrons happen to interact with coherent waves sufficiently intense to significantly influence electron motion over long time intervals.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic approach to nonlinear wave-particle resonant interaction

et al. 2017

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Citation: ARTEMYEV, A.V. ...et al., 2017. Probabilistic approach to nonlinear wave-particle resonant interaction. Physical Review E, 95:023204.Additional Information:• This paper was accepted for publication in the journal Physi- Probabilistic approach to nonlinear wave-particle resonant interaction In this paper we provide a theoretical model describing the evolution of the charged particle distribution function in a system with nonlinear wave particle interactions. Considering a system with strong electrostatic waves propagating in an inhomogeneous magnetic field, we demonstrate that individual particle motion can be characterized by the probability of trapping into the resonance with the wave and by the efficiency of scattering at resonance. These characteristics, being derived for a particular plasma system, can be used to construct a kinetic equation (or generalized FokkerPlanck equation) modelling the long-term evolution of the particle distribution. In this equation, effects of charged particle trapping and transport in phase space are simulated with a nonlocal operator. We demonstrate that solutions of the derived kinetic equations agree with results of test particle tracing. The applicability of the proposed approach for the description of space and laboratory plasma systems is also discussed.

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