Affiliations: [a] School of Equipment Engineering, Shenyang Ligong
University, Shenyang, Liaoning, China | [b] State Key Laboratory of Explosion Science and
Technology, Beijing Institute of Technology, Beijing, China | [c] Laboratory of High Pressure Physics, Southwest
Jiaotong University, Chengdu, Sichuan, China
Abstract: In order to diagnose electromagnetic properties and light flash
characteristics generated by hypervelocity impact, the diagnostic systems of
sweep Langmuir probe(SLP) and triple Langmuir probe (TLP) for electron
temperature and electron density in plasma were established, properties of
magnetic field were obtained by using coil measurement system established, and
characteristics of light flash were also acquired through optical pyrometer
measurement system during the whole physical process in hypervelocity impact,
Experimental results showed that the average electron temperature of the triple
Langmuir probe was near 0.75 eV on the whole physical process, the average
electron density in the experiment was about. However, the electron temperature
and electron density of plasma acquired by using t he sweep Langmuir probe were
lower than the values by using triple Langmuir probe. The peak value of
magnetic induction intensity induced by plasma was 9.8
× 10^{11}/cm^3
during the hypervelocity impacts, and light flash intensity peak value was
40–50 mW.cm^{-2}.nm^{-1} in the
experimental conditions in the paper.
