Thermo Jarrell Ash Corporation

Richard L Crawford

Garry C Kunselman

Arthur E Tobey

Bruce C Fitz-Patrick

Albert Angelucci

Richard S Ferreira

A spectroanalytical system includes housing structure with vent structure open to the atmosphere; radiation dispersing apparatus in the housing structure for dispersing radiation into a spectrum for application to sensor apparatus; sample excitation apparatus for exciting sample material to be analyzed to spectroemissive levels for generating a beam of radiation for dispersion by the dispersing structure; a source of gas; structure for flowing gas from the source into the housing structure for exhaust from the housing structure through the vent structure at a flow rate that is less than one percent of the volume of the housing structure per hour; first control structure for maintaining the pressure of the gas in the housing structure at a constant (within about one millibar) pressure independent of atmospheric pressure; and second control structure for maintaining the temperature of the gas within the housing structure constant within about 0.1.degree. F. during system operation.

Spectroanalytical system and method

A spectroanalytical system with radiation dispersing apparatus for dispersing radiation into a spectrum for concurrent application to an array of exit ports; sample excitation apparatus for exciting sample material to be analyzed to spectroemissive levels for generating a beam of radiation for dispersion by the dispersing structure; the exit port array including a corresponding array of detectors including a first detector positioned adjacent a first exit port positioned to sense first order radiation from an element of interest and a second detector positioned adjacent a second exit port to sense second order radiation from the same element of interest; and processing apparatus for responding to outputs of the first and second detectors to provide a compensated output as a function of the quantity of the element of interest in the sample material.

Spectroscopic analysis

A spectrometer system with structure defining an entrance aperture, dispersing structure, structure defining a plurality of exit apertures, detector structure associated with each exit aperture and a post disperser assembly disposed between an exit aperture and its detector structure.

Growing community of inventors

Attleborough, MA, United States of America

Richard L Crawford