Generation of forerunner electron beam during interaction of ion beam pulse with plasma
Abstract
The long-time evolution of the two-stream instability of a cold tenuous ion beam pulse propagating through the background plasma with density much higher than the ion beam density is investigated using a large-scale one-dimensional electrostatic kinetic simulation. The three stages of the instability are investigated in detail. After the initial linear growth and saturation by the electron trapping, a portion of the initially trapped electrons becomes detrapped and moves ahead of the ion beam pulse forming a forerunner electron beam, which causes a secondary two-stream instability that preheats the upstream plasma electrons. Consequently, the self-consistent nonlinear-driven turbulent state is set up at the head of the ion beam pulse with the saturated plasma wave sustained by the influx of the cold electrons from upstream of the beam that lasts until the final stage when the beam ions become trapped by the plasma wave. Finally, the beam ion trapping leads to the nonlinear heating of the beam ions that eventually extinguishes the instability.
- Authors:
-
- Texas A & M Univ., College Station, TX (United States). Dept. of Aerospace Engineering; Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Publication Date:
- Research Org.:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE; Japan Society for the Promotion of Science (JSPS)
- OSTI Identifier:
- 1433304
- Alternate Identifier(s):
- OSTI ID: 1416462
- Grant/Contract Number:
- AC02-09CH11466
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 25; Journal Issue: 1; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Hara, Kentaro, Kaganovich, Igor D., and Startsev, Edward A. Generation of forerunner electron beam during interaction of ion beam pulse with plasma. United States: N. p., 2018.
Web. doi:10.1063/1.5002688.
Hara, Kentaro, Kaganovich, Igor D., & Startsev, Edward A. Generation of forerunner electron beam during interaction of ion beam pulse with plasma. United States. https://doi.org/10.1063/1.5002688
Hara, Kentaro, Kaganovich, Igor D., and Startsev, Edward A. Mon .
"Generation of forerunner electron beam during interaction of ion beam pulse with plasma". United States. https://doi.org/10.1063/1.5002688. https://www.osti.gov/servlets/purl/1433304.
@article{osti_1433304,
title = {Generation of forerunner electron beam during interaction of ion beam pulse with plasma},
author = {Hara, Kentaro and Kaganovich, Igor D. and Startsev, Edward A.},
abstractNote = {The long-time evolution of the two-stream instability of a cold tenuous ion beam pulse propagating through the background plasma with density much higher than the ion beam density is investigated using a large-scale one-dimensional electrostatic kinetic simulation. The three stages of the instability are investigated in detail. After the initial linear growth and saturation by the electron trapping, a portion of the initially trapped electrons becomes detrapped and moves ahead of the ion beam pulse forming a forerunner electron beam, which causes a secondary two-stream instability that preheats the upstream plasma electrons. Consequently, the self-consistent nonlinear-driven turbulent state is set up at the head of the ion beam pulse with the saturated plasma wave sustained by the influx of the cold electrons from upstream of the beam that lasts until the final stage when the beam ions become trapped by the plasma wave. Finally, the beam ion trapping leads to the nonlinear heating of the beam ions that eventually extinguishes the instability.},
doi = {10.1063/1.5002688},
journal = {Physics of Plasmas},
number = 1,
volume = 25,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2018},
month = {Mon Jan 01 00:00:00 EST 2018}
}
Web of Science
Figures / Tables:
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