A compact and continuously driven supersonic plasma and neutral source

T Asai; H Itagaki; H Numasawa; Y Terashima; Y Hirano; A Hirose

doi:10.1063/1.3483213

A compact and continuously driven supersonic plasma and neutral source

Rev Sci Instrum. 2010 Oct;81(10):10E119. doi: 10.1063/1.3483213.

Authors

T Asai¹, H Itagaki, H Numasawa, Y Terashima, Y Hirano, A Hirose

Affiliation

¹ Department of Physics, College of Science and Technology, Nihon University, Tokyo 101-8308, Japan. asai.tomohiko@nihon-u.ac.jp

PMID: 21033984
DOI: 10.1063/1.3483213

Abstract

A compact and repetitively driven plasma source has been developed by utilizing a magnetized coaxial plasma gun (MCPG) for diagnostics requiring deep penetration of a large amount of neutral flux. The system consists of a MCPG 95mm in length with a DN16 ConFlat connection port and an insulated gate bipolar transistor (IGBT) inverter power unit. The power supply consists of an array of eight IGBT units and is able to switch the discharge on and off at up to 10 kV and 600 A with a maximum repetitive frequency of 10 kHz. Multiple short duration discharge pulses maximize acceleration efficiency of the plasmoid. In the case of a 10 kHz operating frequency, helium-plasmoids in the velocity range of 20 km/s can be achieved.