Axial momentum gains of ions and electrons in magnetic nozzle acceleration
The fully kinetic simulations of magnetic nozzle acceleration are conducted to investigate the axial momentum gains of ions and electrons with the electrostatic and Lorentz forces. Axial momentum gains per ion and electron are directly calculated from the kinetics of charged particles, indicating th...
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| creator | Emoto, Kazuma Takahashi, Kazunori Takao, Yoshinori |
| description | The fully kinetic simulations of magnetic nozzle acceleration are conducted to investigate the axial momentum gains of ions and electrons with the electrostatic and Lorentz forces. Axial momentum gains per ion and electron are directly calculated from the kinetics of charged particles, indicating that electrons in the magnetic nozzle obtain the net axial momentum by the Lorentz force even though they are decelerated by the electrostatic force. Whereas ions are also accelerated by the electrostatic force, the axial momentum gain of electrons increases significantly with increasing the magnetic field strength and becomes dominant in the magnetic nozzle. In addition, it is clearly shown that the axial momentum gain of electrons is due to the electron momentum conversion from the radial to axial direction, resulting in the significant increase in the thrust and the exhaust velocity. |
| doi_str_mv | 10.48550/arxiv.2104.09906 |
| format | Article |
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Axial momentum gains per ion and electron are directly calculated from the kinetics of charged particles, indicating that electrons in the magnetic nozzle obtain the net axial momentum by the Lorentz force even though they are decelerated by the electrostatic force. Whereas ions are also accelerated by the electrostatic force, the axial momentum gain of electrons increases significantly with increasing the magnetic field strength and becomes dominant in the magnetic nozzle. In addition, it is clearly shown that the axial momentum gain of electrons is due to the electron momentum conversion from the radial to axial direction, resulting in the significant increase in the thrust and the exhaust velocity.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.2104.09906</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Acceleration ; Charged particles ; Deceleration ; Electrons ; Exhaust velocity ; Field strength ; Lorentz force ; Magnetic nozzles ; Momentum ; Physics - Plasma Physics</subject><ispartof>arXiv.org, 2021-04</ispartof><rights>2021. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). 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| subjects | Acceleration Charged particles Deceleration Electrons Exhaust velocity Field strength Lorentz force Magnetic nozzles Momentum Physics - Plasma Physics |
| title | Axial momentum gains of ions and electrons in magnetic nozzle acceleration |
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