Helicon-type radiofrequency plasma thrusters and magnetic plasma nozzles

K Takahashi - Reviews of Modern Plasma Physics, 2019 - Springer
Abstract Development of electrodeless radiofrequency plasma thrusters, eg, a helicon
thruster, has been one the of challenging topics for future high-power and long-lived electric …

Helicon discharges and sources: a review

FF Chen - Plasma Sources Science and Technology, 2015 - iopscience.iop.org
Helicon waves are waves in low-temperature, partially ionized plasmas in a dc magnetic
field (B-field). The study of helicons involves both ion–neutral collisions and Larmor orbits …

Thirty percent conversion efficiency from radiofrequency power to thrust energy in a magnetic nozzle plasma thruster

K Takahashi - Scientific reports, 2022 - nature.com
Innovations for terrestrial transportation technologies, eg, cars, aircraft, and so on, have
driven historical industries so far, and a similar breakthrough is now occurring in space …

High temperature electrons exhausted from rf plasma sources along a magnetic nozzle

K Takahashi, H Akahoshi, C Charles, RW Boswell… - Physics of …, 2017 - pubs.aip.org
Two dimensional profiles of electron temperature are measured inside and downstream of a
radiofrequency plasma thruster source having a magnetic nozzle and being immersed in …

Kinetic electron cooling in magnetic nozzles: experiments and modeling

JY Kim, KJ Chung, K Takahashi… - … Sources Science and …, 2023 - iopscience.iop.org
As long-distance space travel requires propulsion systems with greater operational flexibility
and lifetimes, there is a growing interest in electrodeless plasma thrusters that offer the …

Performance improvement of a permanent magnet helicon plasma thruster

K Takahashi, C Charles, R Boswell… - Journal of Physics D …, 2013 - iopscience.iop.org
The performance of a permanent magnet helicon plasma thruster (PM-HPT) is improved by
modifying the magnetic field configuration and increasing the magnetic field strength for …

Effect of magnetic and physical nozzles on plasma thruster performance

K Takahashi, C Charles, R Boswell… - … Sources Science and …, 2014 - iopscience.iop.org
Plasma cross-field diffusion in a magnetic nozzle is inhibited by increasing the magnetic
field strength in a helicon plasma thruster attached to a pendulum thrust balance, while …

Compositions and distributions of the azimuthal currents in the magnetic nozzle

Z Chen, Y Wang, H Tang, J Ren, M Li… - … Sources Science and …, 2021 - iopscience.iop.org
The azimuthal currents in the divergent magnetic nozzle of the electrodeless plasma
thrusters are investigated using a two-dimensional axisymmetric particle-in-cell code. In this …

Numerical investigation of internal plasma currents in a magnetic nozzle

K Emoto, K Takahashi, Y Takao - Physics of Plasmas, 2021 - pubs.aip.org
Two-dimensional fully kinetic particle-in-cell simulations of an electrodeless plasma thruster,
which uses a magnetic nozzle, were conducted to investigate the thrust generation induced …

Electric potential barriers in the magnetic nozzle

Z Chen, Y Wang, H Tang, J Ren, M Li, Z Zhang, S Cao… - Physical Review E, 2020 - APS
Magnetic nozzles are convergent-divergent applied magnetic fields which are commonly
used in electric propulsion, manufacturing, and material processing industries. This paper …