Ruby-Laser Scattering Diagnostics of a Supersonic Plasma Flow for Low-Pressure Plasma Spraying

1 October 1987

journal article
Published by IOP Publishing in Japanese Journal of Applied Physics

Vol. 26 (10A) , L1724-1726
https://doi.org/10.1143/jjap.26.l1724

Abstract

Truly reliable measurements of electron temperature and density in a plasma flow for low-pressure plasma spraying (LPPS) were performed for the first time, using incoherent Thomson scattering of ruby-laser light. The results indicate the characteristic feature of a supersonic nozzle flow, namely, successive appearance of oblique shock-wave heating (∼1 eV) and compression (4×10²¹ m^-3), and subsequent cooling (∼0.2 eV) and rarefaction (1×10²¹ m^-3).

Keywords

LOW PRESSURE
ELECTRON TEMPERATURE
SHOCK WAVE

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