Near-Resonant Rayleigh Scattering Method for Measurements of Alkali Atomic Density in Combustion Gas Plasmas

Yukio Watanabe, Tomoaki Ikegami, Toshio Nishiyama, Masanori Akazaki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

This paper reports the development of a non-intrusive, space-resolved method for density measurements of alkali atoms in combustion gas plasmas. A sodium density of over 1014cm-3in an air-acetylene flame was measured using a near-resonant Rayleigh scattering (NRRS) method, in which the wavelength of the incident laser was detuned from the resonance line of the sodium atoms in order to avoid reabsorption of the scattered signal light. The results agree fairly well with those obtained by the spectral absorption method and the Na reference cell method. The results show that the NRRS method described here can also be used to measure atomic densities of the order of 1016cm-3typical values in an open-cycle MHD power-generation plasma.

Original languageEnglish
Pages (from-to)904-908
Number of pages5
JournalJapanese journal of applied physics
Volume23
Issue number7R
DOIs
Publication statusPublished - Jul 1984

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Near-Resonant Rayleigh Scattering Method for Measurements of Alkali Atomic Density in Combustion Gas Plasmas'. Together they form a unique fingerprint.

Cite this