Comparing Olympus X-Ray Diffraction to conventional XRD
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Transcript of Comparing Olympus X-Ray Diffraction to conventional XRD
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ComparingOlympus X-Ray Diffraction
to conventional XRD
![Page 2: Comparing Olympus X-Ray Diffraction to conventional XRD](https://reader034.fdocuments.us/reader034/viewer/2022042506/55a6d8b11a28ab72298b4756/html5/thumbnails/2.jpg)
Olympus XRD Analyzers
BTX IIBenchtop XRD
Compact Lab Use
TERRA Portable XRD
Field Use
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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
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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
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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
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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
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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
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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
![Page 9: Comparing Olympus X-Ray Diffraction to conventional XRD](https://reader034.fdocuments.us/reader034/viewer/2022042506/55a6d8b11a28ab72298b4756/html5/thumbnails/9.jpg)
Comparison Diffractograms
Lab based 2KW PXRD
Lab based 2KW PXRD
Olympus Terra/BTXIIOlympus
Terra/BTXII
Drywall Sample with a 5 minute acquisition time.
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Comparison Diffractograms
Lab based 2KW PXRD
Lab based 2KW PXRD
Olympus Terra/BTXIIOlympus
Terra/BTXII
A complex pharmaceutical sample
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For more information, please contact Olympus Applications Support
BTX IIBenchtop XRD
TERRA Portable XRD
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For more information please visit:www.olympus-ims.com