Affiliations: [a] School of Equipment Engineering, Shenyang Ligong
University, Shenyang, China | [b] State Key Laboratory of Explosion Science and
Technology, Beijing Institute of Technology, Beijing, China
Abstract: To acquire the characteristic parameters of plasma generated by
hypervelocity impact, experimental system and a new Triple Langmuir probe
diagnostic system are established in the paper. Triple Langmuir probe
diagnostic technology does not require a voltage or frequency sweep compared to
other Langmuir probe methods. The system allows the direct display of electron
temperature and semidirect display of electron density by appropriate display
system, this method eliminates the time consuming in data analysis required in
curve-fitting current-voltage characteristics. As an example of application to
time-dependent plasmas measurement, the electron temperature and electron
density of plasmas were measured in hypervelocity impact experiments.
Experimental results show that the Triple Langmuir probe diagnostic technology
can be well used to measure electron temperature and electron density of
time-evolution plasma.
Keywords: Hypervelocity impact, plasma, triple langmuir probe, electron temperature, electron density
