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Title: Probe for measurement of velocity and density of vapor in vapor plume

A probe which directs a light beam through a vapor plume in a first direction at a first angle ranging from greater than to less than, reflecting the light beam back through the vapor plume at a angle, and then reflecting the light beam through the vapor plume a third time at a second angle equal to the first angle, using a series of mirrors to deflect the light beam while protecting the mirrors from the vapor plume with shields. The velocity, density, temperature and flow direction of the vapor plume may be determined by a comparison of the energy from a reference portion of the beam with the energy of the beam after it has passed through the vapor plume.
 [1];  [2];  [1]
  1. (Livermore, CA)
  2. (Bethel Island, CA)
Issue Date:
OSTI Identifier:
United States of America as represented by United States (Washington, DC) LLNL
Patent Number(s):
US 5610704
Contract Number:
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
probe; measurement; velocity; density; vapor; plume; directs; light; beam; direction; angle; ranging; degree; 90; reflecting; third; time; equal; series; mirrors; deflect; protecting; shields; temperature; flow; determined; comparison; energy; reference; portion; passed; vapor plume; reference portion; flow direction; light beam; third time; /356/