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X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
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X-ray diffraction imaging with the Multiple Inverse Fan Beam topology: principles, performance and potential for

G Harding1, H Fleckenstein, D Kosciesza

  • 1Morpho Detection Germany GmbH, Heselstuecken 3, 22453 Hamburg, Germany. Geoffrey.Harding@Morphodetection.com

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|January 17, 2012
PubMed
Summary
This summary is machine-generated.

X-ray diffraction imaging (XDI) enhances security screening by offering more classification features to reduce false alarms. This new Multiple Inverse Fan Beam (MIFB) XDI technology improves explosive detection for both solid and liquid threats.

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Area of Science:

  • Security screening technology
  • Materials analysis
  • Explosives detection

Background:

  • Increasing threat classes (HMEs, LAGs) raise false alarm rates in security equipment.
  • X-ray diffraction (XRD) provides multiple features for solid and LAGs explosive detection.
  • X-ray diffraction imaging (XDI) combines image formation and material analysis.

Purpose of the Study:

  • To introduce and describe the Multiple Inverse Fan Beam (MIFB) XDI topology.
  • To present physical relationships and experimental performance of MIFB XDI components.
  • To assess MIFB XDI performance against existing security screeners and outline its potential.

Main Methods:

  • Description of the Multiple Inverse Fan Beam (MIFB) XDI topology.
  • Presentation of physical relationships for radiation source, collimators, and detectors.
  • Measurement and display of X-ray diffraction profiles for threat substances using a laboratory MIFB XDI system.

Main Results:

  • Experimental performance data for MIFB XDI components were achieved.
  • Representative X-ray diffraction profiles of threat substances were obtained.
  • MIFB XDI performance was assessed relative to the 2nd Generation XRD 3500TM screener.

Conclusions:

  • MIFB XDI offers enhanced features for classifying explosive threats, reducing false alarms.
  • The technology shows potential for reducing costs in hold baggage screening.
  • MIFB XDI can enable simultaneous "in situ" detection of liquid and solid explosives in carry-on baggage.