Follow this link to go to the text only version of
NASA - National Aeronautics and Space Administration
+ Contact NASA
Structures and Materials Division Research and Technology Directorate NASA Glenn Research Center

Analytical Science Group
Analytical Science Group Home
Analytical Chemistry
Electron Optics
XRay Diffraction
Analytical Chemistry
X-Ray fluorescence Spectrometry
  • Nondestructive analysis of solids, liquids, or powders for elements from magnesium to uranium. It has limited capability for the elements boron through sodium when present in higher concentrations.
  • Accuracy and precision better than 1% relative for flat, fully dense solids with closely matched standards; better than 10% relative for non-ideal samples using a library of general calibration standards.
  • Dynamic Range from 0.1 to 100%, for most elements
  • Fast semiquantitative analysis of virtually any sample, such as for commercial alloy identification
Sample Requirements
  • Size at least 10 cm diameter on the measuring surface but overall sample can not be more than 52 cm diameter and 40 cm tall
  • For best quantitative data, measuring surface should be polished flat, nonporous, and consistent composition to a depth of about 50 microns
Instrumentation: Philips PW2400
  • Sequential operation with vacuum or helium purge
  • Rh x-ray tube operates at up to 3 kW
  • Sealed xenon, flow proportional and scintillation detectors
  • 6 position automatic sample changer
  • Rigorous quantitative and fast semiquantitative software packages
  • Programmable switching for up to 5 beam filters, up to 3 beam collimators, and up to 8 analyzing crystals
Philips Model PW2400
Above: Philips Model PW2400

+ Return to the Analytical Chemistry page...
For further information please contact Dereck Johnson
Atomic Absorption lab and equipment
Atomic Absorption Spectrophotometry
ICP operator and equipment
Inductively Coupled Plasma (ICP) Atomic Emission Spectrometry
CS-444LS unit in the Interstitial Gas Analysis lab
Interstitial Gas Analysis
CS-444LS unit in the Interstitial Gas Analysis lab
Wet Chemistry Analysis
Philips PW2400
X-Ray fluorescence Spectrometry
Phased extraction equipment
Phase Extraction Analysis


+ NASA Web Privacy Policy and Important Notices
+ Freedom of Information Act
+ The President's Management Agenda
+ NASA Privacy Statement, Disclaimer,
and Accessibility Certification

+ Inspector General Hotline

NASA - National Aeronautics and Space Administration
NASA Official: Ajay K. Misra
+ Web Curator
+ Contact NASA
Last Updated: May 13, 2008