This information is lost in traditional processing, but retained with ion microprobe
analysis because the rock is not broken up.
Its impedance discontinuity, less than 5 [ohm], compares to a microprobe
DuPont de Nemours Experimental Station in Wilmington, DE where he became involved in x-ray fluorescence (XRF) but soon developed an interest in Electron Probe Microanalysis (EPMA) when DuPont purchased one of the first commercial Applied Research Laboratories (ARL) scanning electron microprobes
Automation Systems are provided by Advanced MicroBeam, Thermo Noran and Geller MicroAnalytical Laboratory.
Prior to the development of wavelength-dispersed spectroscopy on an electron microprobe
analyzer and energy-dispersed spectroscopy on a scanning electron microscope, selective etching experiments were conducted as an aid to intermetallic phase identification.
The analytical tools have become more sophisticated, as researchers use electron microscopy, electron spectroscopy for chemical analysis (ESCA), scanning auger microprobe
(SAM) and other techniques to make precise measurements at varying depths and angles.
Only one archaeological sample (from Ephesus) was large enough for X-ray fluorescence analysis, so the greater part of the provenancing was done using microprobe
Three types of equipment--an electron microprobe
, X-ray synchrotron, and ion microprobe
--were used to study the rock from the Bishop area.
Shipments to a device manufacturer in Thailand for a VX4 System, and a California probe card manufacturer, MicroProbe
, for a VX4 with direct dock, are scheduled for Q2 2010.
The subject of performance of this contract is the supply of X-ray fluorescence microprobe
for elemental analysis from Na after U.
By using an ion microprobe
, Christoph Helo, student in McGill's Department of Earth and Planetary Sciences, has discovered very high concentrations of CO2 in droplets of magma trapped within crystals recovered from volcanic ash deposits on Axial Volcano on the Juan de Fuca Ridge, off the coast of Oregon.
Specific topics covered include the Aral Sea disaster, microprobe
monazite geochronology, microsampling and isotopic analysis of igneous rocks, the crustal dichotomy on Mars, and the tectonics and climate of the Southern Central Andes.