SENSITIVE ELECTRON SPECTROMETER

THE NEW INDUCED ELECTRON EMISSION (IEE) SPECTROMETER DEVELOPED BY VARIAN ASSOCIATES IS DESCRIBED. THIS SPECTROMETER'S GREAT POTENTIAL UTILITY DERIVES FROM THE FACT THAT EVERY ELEMENT HAS A DIFFERENT LEVEL OF ENERGY BINDING ITS INNER SHELL ELECTRONS IN PLACE. THIS ENERGY IS DETERMINED BY DISLODGING THESE ELECTRONS WITH SOFT X-RAYS AND ARRANGING THEIR TRAJECTORIES ACCORDING TO ENERGY LEVELS USING A UNIFORM ELECTROSTATIC FIELD. THE RESULTING ELECTRON CURRENT THEN IS MEASURED. BINDING ENERGY IS OBTAINED BY CALCULATING THE LOSS BETWEEN THE X-RAY SOURCE AND THE FINAL RECORDED ENERGY FOR EACH ELECTRON. PRIMARY APPLICATION OF THE INSTRUMENT WILL BE IN: CHEMICAL, PHARMACEUTICAL AND PETROLEUM INDUSTRIES, PLASTICS RESEARCH, METALLURGICAL, BIOMEDICAL, AND MEDICAL ANALYSIS. A DOUBLE-WALLED MU METAL CYLINDER THAT PREVENTS MAGNETIC FIELDS FROM PENETRATING THE SAMPLE CHAMBER. THE OUTER WALL OF THIS CYLINDER IS LACED WITH A DEGAUSSING NETWORK THAT REDUCES TO NOTHING THE RESIDUAL MAGNETIC FIELD OF THE WALLS. SIX OUTSTANDING FEATURES OF THE INSTRUMENT INCLUDE: (1) SENSITIVITY IS AT LEAST 10 TIMES GREATER THAN THAT OBTAINABLE WITH EXISTING ANALYTICAL SPECTROSCOPIC INSTRUMENTS, (2) RESOLUTION SHOULD ALLOW DETERMINATION OF THE CHEMICAL STRUCTURE OF A SINGLE CELL, (3) ANALYSIS IS EQUALLY EFFECTIVE WHETHER SAMPLES ARE ORGANIC OR INORGANIC, (4) SAMPLES CAN BE IN ANY FORM, SOLID, GAS, OR LIQUID, (5) SAMPLES CAN BE VERY SMALL SO THAT A SINGLE BIOLOGICAL CELL CAN BE INSPECTED WITHOUT CHEMICAL DAMAGE, AND (6) EQUAL SENSITIVITY ACROSS THE ENTIRE PERIODIC TABLE IS MAINTAINED, EXCEPT IN THE CASE OF HYDROGEN, WHICH HAS NO SPARE ELECTRONS TO DISLODGE AND MEASURE.

• Supplemental Notes:
  • Vol 11, No 1, P 15
• Publication Date: 1969-1

Media Info

• Serial:
  • Industrial Research
  • Publisher: Dun Donnelley Publishing Corporation

Subject/Index Terms

• TRT Terms: Binders; Chemical analysis; Electromagnetic fields; Electrons; Electrostatics; Energy; Sensitivity; Spectrometers; X rays
• Uncontrolled Terms: Resolution
• Old TRIS Terms: Binding; Electron emission
• Subject Areas: Energy; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00216803
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 21 1994 12:00AM