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The Use of Collimating X-Ray Optics For Wavelength Dispersive Spectroscopy

Published online by Cambridge University Press:  02 July 2020

R. Agnello ,
J. Howard ,
J. McCarthy  and
D. OHara
R. Agnello
Affiliation:
NORAN Instruments Inc., 2551 West Beltline Highway, Middleton, WI53562
J. Howard
Affiliation:
NORAN Instruments Inc., 2551 West Beltline Highway, Middleton, WI53562
J. McCarthy
Affiliation:
NORAN Instruments Inc., 2551 West Beltline Highway, Middleton, WI53562
D. OHara
Affiliation:
Parallax Research Inc., P. O. Box 12212, Tallahassee, FL, 32317
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Extract

There has been much interest in the last few years in the technique for focusing x-rays into high intensity spots using tapered glass capillaries or other forms of grazing incident x-ray reflectors. The resulting microbeams have been used in applications that include microfluorescence, microdiffraction, tomography and lithography. Instead of focusing x-rays to a spot, a collimating optic can be used to capture x-rays from a point source and turn them into a collimated parallel beam at the exit aperture to the optic. Kirkland et. al. have pointed out that the use of such an optic could provide enhanced detection sensitivity in wavelength dispersive spectroscopy.

We have developed a grazing incidence collimating x-ray optic that can be coupled to a simple wavelength dispersive spectrometer (WDS). This combined instrument was designed to enhance the intensity of x-rays from a sample by an order of magnitude or more in the energy range of 0 to 1 keV compared to a conventional WDS.

Type
Quantitative Biological and Materials Microanalysis by Electrons and X-Rays
Information
Microscopy and Microanalysis , Volume 3 , Issue S2: Proceedings: Microscopy & Microanalysis '97, Microscopy Society of America 55th Annual Meeting, Microbeam Analysis Society 31st Annual Meeting, Histochemical Society 48th Annual Meeting, Cleveland, Ohio, August 10-14, 1997 , August 1997 , pp. 889 - 890
Copyright
Copyright © Microscopy Society of America 1997

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