1 / 18

E nergy D ispersive X -ray Fluorescence Spectrometer

EDX-720 Training. E nergy D ispersive X -ray Fluorescence Spectrometer. E nergy D ispersive X -ray Fluorescence Spectrometer. An Atom. Electrons. Nucleus: Protons Neutrons. K. L. M. Orbital or shell. Atoms & Energy. Atoms can absorb and release energy using electrons.

emelda
Télécharger la présentation

E nergy D ispersive X -ray Fluorescence Spectrometer

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. EDX-720 Training Energy DispersiveX-ray Fluorescence Spectrometer Energy DispersiveX-ray Fluorescence Spectrometer

  2. An Atom Electrons Nucleus: Protons Neutrons K L M Orbital or shell

  3. Atoms & Energy Atoms can absorb and release energy using electrons Atoms absorb energy by promoting an electron to a higher energy orbital Atoms release energy by demoting electrons to a lower energy orbital K L M Energy

  4. What are X-Rays?.......Energy X-Rays Are a Type of Electromagnetic Wave Also Light or Energy

  5. Two types of X-Rays Continuous X-rays vs. Characteristic X-rays Low energy Discrete spectrum Energy out High energy Broad spectrum Energy in

  6. Two types of X-Rays DETECTER Energy Released from the System (Characteristic X-ray) Energy Put into the System (Continuous X-ray) K L M X-ray Tube (Rh)

  7. Characteristic X-Rays Types of transitions

  8. X-Ray Tube and Spectra How X-Rays are generated

  9. SiLi Detector

  10. Filters MoNi Ag Mo Ti EDX-720 includes: Ag, Mo, MoNi, Ti Rh creates it own spectra Sensitivity is low in these areas Introducing a filter reduces the Rh background Increases Sensitivity! ! !

  11. Filters (Cont.)

  12. Filters (Cont.) Without primary filter With primary filter • X-ray tube consist of characteristic X-ray (Rh) and continuous X-rays. • Continuous X-rays are background • Filters decrease background

  13. Intensity vs. Matrix Intensity and Density are inversely related Density affects the analyte’s ability to Fluoresce through the matrix

  14. Measurement Atmosphere • Air, Helium, or Vacuum: • Elements in the range of Na – Sc • Measurement under Helium or Vacuum • Allows analysis of light elements whose x-ray emissions may be absorbed by air, and • Increasing sensitivity for light elements • Solid - Air, Vacuum, or Helium • Liquid - Air, Helium • Powder - Air, Helium

  15. Types of Analyses Two Types of Analyses: Qual/Quant Quantitative Analysis Conditions: FP (Fundamental Parameters Calibration Curve Sample Form: Bulk Films Filter Paper

  16. Hardware Accessories Collimator Exchanger 10 mm 5 mm 3 mm 1 mm CCD Camera X,Y Positioner X Y

  17. Sample Turret • Up to 16 samples • Analysis in air • Analysis under He/Vacuum for lighter elements • Continuous measurement using a sample turret

  18. Sample Films and Containers Film (Covers)

More Related