Deterministic scattering of relativistic electron beams by off-resonant circularly polarized electromagnetic waves

Yoon, Young Dae; Ji, Jeong-Young; Yun, Gunsu S.

doi:10.1063/5.0049554

Title: Deterministic scattering of relativistic electron beams by off-resonant circularly polarized electromagnetic waves

Journal Article · Mon Jun 21 00:00:00 EDT 2021 · Physics of Plasmas

DOI:https://doi.org/10.1063/5.0049554· OSTI ID:1849568

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Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of)
Utah State Univ., Logan, UT (United States). Dept. of Physics
Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of). Dept. of Physics. Division of Advanced Nuclear Engineering

A mechanism is presented whereby relativistic electron beams localized in phase space are deterministically scattered by coherent circularly polarized electromagnetic waves without stochastic processes. It is shown via an exact single-particle analysis that the condition for maximal scattering is an off-resonant condition, contrary to previous kinetic analyses that predict maximal diffusion or interaction at exact resonance or its harmonics. The mechanism, verified by single-particle simulations, enables a fast, nonlinear redistribution of the beam particles. A possible application of this mechanism to runaway electron suppression is presented.

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Research Organization:: Utah State Univ., Logan, UT (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: FG02-04ER54746; SC0018146

OSTI ID:: 1849568

Alternate ID(s):: OSTI ID: 1797858

Journal Information:: Physics of Plasmas, Vol. 28, Issue 6; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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