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A time resolved microfocus XEOL facility at the Diamond Light Source

DOI: 10.1088/1742-6596/425/18/182009 DOI Help

Authors: Fred Mosselmans (Diamond Light Source) , Richard Taylor (University of St Andrews) , Paul Quinn (Diamond Light Source) , Adrian Finch (Department of Earth Sciences, University of St Andrews) , Giannantonio Cibin (Diamond Light Source) , Diego Gianolio (Diamond Light Source) , Andrei Sapelkin (Queen Mary University of London)
Co-authored by industrial partner: No

Type: Conference Paper
Conference: 11th International Conference on Synchrotron Radiation Instrumentation (SRI2012)
Peer Reviewed: No

State: Published (Approved)
Published: March 2013

Abstract: We have constructed a Time-Resolved X-ray Excited Optical Luminescence (TR-XEOL) detection system at the Microfocus Spectroscopy beamline I18 at the Diamond Light Source. Using the synchrotron in "hybrid bunch mode", the data collection is triggered by the RF clock, and we are able to record XEOL photons with a time resolution of 6.1 ps during the 230 ns gap between the hybrid bunch and the main train of electron bunches. We can detect photons over the range 180-850 nm using a bespoke optical fibre, with X-ray excitation energies between 2 and 20 keV. We have used the system to study a range of feldspars. The detector is portable and has also been used on beamline B18 to collect Optically Determined X-ray Absorption Spectroscopy (OD-XAS) in QEXAFS mode.

Journal Keywords: Absorption Spectroscopy; Diamonds; Excitation; Feldspars; Hybridization; Kev Range 01-10; Kev Range 10-100; Light Sources; Luminescence; Optical Fibers; Photons; Synchrotrons; Time Resolution; X Radiation; X-Ray Spectroscopy

Subject Areas: Technique Development

Instruments: B18-Core EXAFS , I18-Microfocus Spectroscopy