www ssi shimadzu com EDX720 Training E nergy

www. ssi. shimadzu. com EDX-720 Training E nergy Dispersive X-ray Energy Dispersive X-ray Fluorescence Spectrometer

www. ssi. shimadzu. com An Atom Electrons Nucleus: K L M Orbital or shell Protons Neutrons

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

www. ssi. shimadzu. com What are X-Rays? . . . . Energy X-Rays Are a Type of Electromagnetic Wave Also Light or Energy

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

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

www. ssi. shimadzu. com Characteristic X-Rays Types of transitions

www. ssi. shimadzu. com X-Ray Tube and Spectra How X-Rays are generated

www. ssi. shimadzu. com Si. Li Detector

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

www. ssi. shimadzu. com Filters (Cont. )

www. ssi. shimadzu. com 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

www. ssi. shimadzu. com Intensity vs. Matrix Intensity and Density are inversely related Density affects the analyte’s ability to Fluoresce through the matrix

www. ssi. shimadzu. com 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

www. ssi. shimadzu. com Types of Analyses Two Types of Analyses: Qual/Quantitative Analysis Conditions: FP (Fundamental Parameters Calibration Curve Sample Form: Bulk Films Filter Paper

www. ssi. shimadzu. com Hardware Accessories Collimator Exchanger 10 mm 5 mm CCD Camera X, Y Positioner X Y 3 mm 1 mm

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

www. ssi. shimadzu. com Sample Films and Containers Film (Covers)