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Aerosol beam-focus laser-induced plasma spectrometer device

United States Patent

March 19, 2002
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
An apparatus for detecting elements in an aerosol includes an aerosol beam focuser for concentrating aerosol into an aerosol beam; a laser for directing a laser beam into the aerosol beam to form a plasma; a detection device that detects a wavelength of a light emission caused by the formation of the plasma. The detection device can be a spectrometer having at least one grating and a gated intensified charge-coupled device. The apparatus may also include a processor that correlates the wavelength of the light emission caused by the formation of the plasma with an identity of an element that corresponds to the wavelength. Furthermore, the apparatus can also include an aerosol generator for forming an aerosol beam from bulk materials. A method for detecting elements in an aerosol is also disclosed.
Cheng; Meng-Dawn (Oak Ridge, TN)
Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
09/ 416,337
October 12, 1999
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with United States Government support awarded by the Department of Energy to Lockheed Martin Energy Research Corporation, Contract No. DE-AC05-96OR22464. The United States Government has certain rights in this invention.