Advances in array detectors for X-ray diffraction techniques

Quentin S. Hanley, M Bonner Denton

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Improved focal plane array detector systems are described which can provide improved readout speeds, random addressing and even be employed to simultaneously measure position, intensity and energy. This latter capability promises to rekindle interests in Laue techniques. Simulations of three varieties of foil mask spectrometer in both on- and off-axis configurations indicate that systems of stacked silicon detectors can provide energy measurements within 1 % of the true value based on the use of single 'foils' and ∼ 10000 photons. An eight-detector hybrid design can provide energy coverage from 4 to 60 keV. Energy resolution can be improved by increased integration time or higher flux experiments. An off-axis spectrometer design in which the angle between the incident beam and the detector system is 45° results in a shift in the optimum energy response of the spectrometer system. In the case of a 200 μm-thick silicon absorber, the energy optimum shifts from 8.7 keV to 10.3 keV as the angle of incidence goes from 0 to 45°. These new designs make better use of incident photons, lower the impact of source flicker through simultaneous rather than sequential collection of intensities, and improve the energy range relative to previously reported systems.

Original languageEnglish (US)
Pages (from-to)618-625
Number of pages8
JournalJournal of Synchrotron Radiation
Volume12
Issue number5
DOIs
StatePublished - Sep 2005

Fingerprint

Spectrometers
Detectors
X ray diffraction
Metal foil
detectors
Photons
diffraction
Electric power measurement
Silicon detectors
x rays
Focal plane arrays
spectrometers
energy
Masks
foils
Fluxes
Silicon
flicker
shift
photons

Keywords

  • CCD
  • CID
  • CMOS
  • Laue diffraction
  • Spectrometer

ASJC Scopus subject areas

  • Instrumentation
  • Atomic and Molecular Physics, and Optics
  • Radiation
  • Physics and Astronomy (miscellaneous)

Cite this

Advances in array detectors for X-ray diffraction techniques. / Hanley, Quentin S.; Denton, M Bonner.

In: Journal of Synchrotron Radiation, Vol. 12, No. 5, 09.2005, p. 618-625.

Research output: Contribution to journalArticle

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