Patent ID: 6023329
Filing Date: 2000-02-08
Classification: G01J,G01N,G01P,H05H

Abstract:
A method for determining at least one parameter of a gas or plasma flow, said method being based on atomic absorption spectroscopy, said method comprising the steps of:feeding a Rubidium compound into the gas or plasma flow, in which the Rubidium compound dissociates into Rubidium atoms;stimulating the Rubidium atoms with a first laser beam;detecting a first transmitted laser intensity;determining first absorption lines from the first transmitted laser intensity;stimulating Rubidium atoms with a second laser beam;detecting a second transmitted reference laser intensity;determining second reference absorption lines from the second transmitted reference laser intensity; anddetermining at least one parameter of the gas or plasma flow from the comparison of the first absorption lines and the second reference absorption lines of the Rubidium atoms.