comparing olympus x-ray diffraction to conventional xrd
TRANSCRIPT
ComparingOlympus X-Ray Diffraction
to conventional XRD
Olympus XRD Analyzers
BTX IIBenchtop XRD
Compact Lab Use
TERRA Portable XRD
Field Use
How is Olympus XRD different? Small Portable Low unit cost Low power
Conventional XRD Olympus XRD
Low operating cost No moving parts Easy sample prep Fast analysis
Compact Geometry
• Power of x-ray tube can be reduced without sacrificing the number of available photons compared to large instruments
• Lower power tube eliminates need for external cooling and results in overall lower power consumption
r
Debye-Scherrer XRD geometry:Photons fall off as a function of 1/r2
Simultaneous Measurement
• Conventional 2KW instruments take a few seconds to collect each 2Θ measurement and scanning entire 2Θ range can take 15 mins to several hours
• CCD detector used by Olympus collects the entire 2Θ range simultaneously so complete diffraction pattern is visible almost immediately
Simultaneous Measurement
secondary peaks clear
1 min / 4 exposures
3 min / 11 exposures
10 min / 36 exposures
For identifiable peaks, quantification stabilizes
very quickly
secondary peaks visible
primary peaks visible - likely identifiable
Energy Discrimination Detector• Energy sensitive detector distinguishes between
photons with the same energy as the X-ray tube contributing to the XRD pattern vs counts caused by florescence of the sample
• The Smart Sense filter selectively removes the counts caused by florescence to provide better signal-to-noise pattern
Transmission Geometry
• Power of x-ray tube can be reduced without sacrificing number of available photons compared to large instruments
• Lower power tube eliminates need for external cooling and results in overall lower power consumption
• Eliminates need for goniometer and calibrations associated with that equipment used in reflective geometry
r
Debye-Scherrer XRD geometry:Photons fall off as a function of 1/r2
Comparison Diffractograms
Lab based 2KW PXRD
Lab based 2KW PXRD
Olympus Terra/BTXIIOlympus
Terra/BTXII
Drywall Sample with a 5 minute acquisition time.
Comparison Diffractograms
Lab based 2KW PXRD
Lab based 2KW PXRD
Olympus Terra/BTXIIOlympus
Terra/BTXII
A complex pharmaceutical sample
For more information, please contact Olympus Applications Support
BTX IIBenchtop XRD
TERRA Portable XRD
For more information please visit:www.olympus-ims.com