Ruby-laser scattering diagnostics of a supersonic plasma flow for low-pressure plasma spraying

Ruby-laser scattering diagnostics of a supersonic plasma flow for low-pressure plasma spraying

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, su...

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Veröffentlicht in:Japanese Journal of Applied Physics 1987-10, Vol.26 (10), p.L1724-L1726
Hauptverfasser: HIDAKA, R, OOKI, T, TAKEDA, K, KONDO, K, KANDA, H, UCHINO, K, MATSUDA, Y, MURAOKA, K, AKAZAKI, M
Format: Artikel
Sprache:eng
Schlagworte:
Exact sciences and technology
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma devices
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Zusammenfassung: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 (4×10 21 m -3 ), and subsequent cooling (∼0.2 eV) and rarefaction (1×10 21 m -3 ).
ISSN:0021-4922
1347-4065
DOI:10.1143/jjap.26.l1724