Laser Spectroscopy of Plasmas
Abstract
A study has been conducted to develop novel advanced laser spectroscopy plasma diagnostic methods. The methods are based on observing the Doppler shift in the absorption lines of ionic species. The two methods studied are Velocity Modulated Laser Spectroscopy and Two-Beam Doppler Shift Laser Spectroscopy. The scientific goal of the work was to increase understanding of plasmas by making non-intrusive fashion. The scientific approach was to combine conventional laser spectroscopies with velocity detection. Using a method such as Rayleigh, fluorescence, or Raman scattering, one probes the Doppler profile of the species of interest, observing shifts in the Doppler profile that arise because of the presence of an electric field. The shift may be related to the ion mobility, and thus conductivity, if the electric field is known, or to the electric field if the mobility is known. Temperature and concentration may be recovered by the conventional means. Keywords: Plasmas; Laser spectroscopy; Temperature; Electric field; Flames.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 27, 1990
- Accession Number
- ADA221978
Entities
People
- John W. Daily
Organizations
- University of California, Berkeley