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Method for studying a sample of material using a heavy ion induced mass spectrometer source

United States Patent

5,872,824
February 16, 1999
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A heavy ion generator is used with a plasma desorption mass spectrometer to provide an appropriate neutron flux in the direction of a fissionable material in order to desorb and ionize large molecules from the material for mass analysis. The heavy ion generator comprises a fissionable material having a high n,f reaction cross section. The heavy ion generator also comprises a pulsed neutron generator that is used to bombard the fissionable material with pulses of neutrons, thereby causing heavy ions to be emitted from the fissionable material. These heavy ions impinge on a material, thereby causing ions to desorb off that material. The ions desorbed off the material pass through a time-of-flight mass analyzer, wherein ions can be measured with masses greater than 25,000 amu.
Fries; David P. (St. Petersburg, FL), Browning; James F. (Palm Harbour, FL)
The United States of America as represented by the United States Department of Energy (Washington, DC)
08/ 693,507
August 8, 1996
The United States Government has rights in this invention pursuant to contract no. DE-AC04-92AL73000 between the United States Department of Energy and Martin Marietta Specialty Components, Inc.