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Application of Tapered Monocapillary in a Laboratory Mxrf Set-Up

Published online by Cambridge University Press:  06 March 2019

N. Gao ,
I. Ponomarev ,
Q. F. Xiao ,
W. M. Gibson  and
D. A. Carpenter
N. Gao
Affiliation:
X-Ray Optical Systems, Inc., 90 Fuller Road, Albany, NY 12205 Center for X-Ray Optics, University at Albany, SUNY, Albany, NY 12222
I. Ponomarev
Affiliation:
Center for X-Ray Optics, University at Albany, SUNY, Albany, NY 12222
Q. F. Xiao
Affiliation:
Center for X-Ray Optics, University at Albany, SUNY, Albany, NY 12222
W. M. Gibson
Affiliation:
X-Ray Optical Systems, Inc., 90 Fuller Road, Albany, NY 12205
D. A. Carpenter
Affiliation:
Oak Ridge Centers for Manufacturing Technology, Oak Ridge Y-12 Plant, P.O.Box 2009, Oak Ridge, TN 37831-8084
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Abstract

Simulation and experimental work that compare the performance of straight and tapered monocapillaries when used with laboratory x-ray sources are reported. Detailed simulations for various taper profiles give several important conclusions for optimizing the design of a tapered monocapillary. Several tapered monocapillaries were prepared. With a 16W x-ray source, beam intensities of 4×105 photon/sec/μm2 and 3×105photon/sec/μm2 of Cu Kα x rays were obtained from the tapered monocapillaries for output diameters of 8μm and 3.5μm, respectively. These intensities are 1.4 and 1.5 times that obtained from straight capillaries with the same output beam sizes at the experimental set-up optimized for a straight capillary. In addition to the gain in x-ray flux, the tapered monocapillaries produce output beams with significantly reduced high energy bremsstrahlung radiation and increased flux stability with respect to shifts of the x-ray source spot.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 39: Forty-Fourth Annual Conference on Applications of X-ray Analysis, July 31 - August 4, 1995 , 1995 , pp. 81 - 86
Copyright
Copyright © International Centre for Diffraction Data 1995

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References

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