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Search Publications by: Dale E. Newbury (Assoc)

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Displaying 151 - 175 of 216

Lowering the Limit of Detection in High Spatial Resolution Electron Beam Microanalysis With the Microcalorimeter Energy Dispersive X-Ray Spectrometer

June 1, 1999
Author(s)
Dale E. Newbury, David A. Wollman, Kent D. Irwin, Gene C. Hilton, John M. Martinis
Low-beam-energy x-ray microanalysis with the field-emission-gun scanning electron microscope suffers limitations due to physical factors of x-ray generation. Instrumental limitations are imposed by the poor resolution of the conventional semiconductor

Boron Substrates for the X-Ray Microanalysis of Particles

January 1, 1999
Author(s)
Eric S. Windsor, Dale E. Newbury, J Kessler
Boron is available commercially as high purity (> 0.995) crystalline pieces. Using metallographic sample preparation techniques, these crystalline pieces can be prepared to form substrates that are useful for the x-ray microanalysis of particles. Boron is

Castaing's Electron Microprobe and its Impact on Materials Science

January 1, 1999
Author(s)
Dale E. Newbury
A central theme of modern materials science has been the exploration of the relationship between the microstructure of a material and its macroscopic properties. The answer to many materials science questions requires knowledge of the specific composition

Trace Element Detection at Nanometer Scale Spatial Resolution

September 1, 1998
Author(s)
Dale E. Newbury
Trace elemental constituents present in materials at concentration levels below 0.01 mass fraction can exert significant control on important electronic, optical, chemical, and mechanical properties. Detecting and measuring trace constituents while

Microcalorimeter EDS Measurements of Chemical Shifts in Fe Compounds

July 1, 1998
Author(s)
David A. Wollman, Dale E. Newbury, Gene C. Hilton, Kent D. Irwin, L L. Dulcie, Norman F. Bergren, John M. Martinis
Chemical shifts result from changes in electron binding energies with the chemical environment of atoms. In x-ray spectra, chemical shifts lead to changes in x-ray peak positions, relative peak intensities, and peak shapes. These chemical bonding effects