Optimization of X-ray energy resolution from a horizontally focused single-crystal monochromator
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作者:
Lidestri, Joseph P.
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Columbia Univ, Howard Hughes Med Inst, Dept Biochem & Mol Biophys, New York, NY 10032 USAColumbia Univ, Howard Hughes Med Inst, Dept Biochem & Mol Biophys, New York, NY 10032 USA
Lidestri, Joseph P.
[1
]
Hendrickson, Wayne A.
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Columbia Univ, Howard Hughes Med Inst, Dept Biochem & Mol Biophys, New York, NY 10032 USAColumbia Univ, Howard Hughes Med Inst, Dept Biochem & Mol Biophys, New York, NY 10032 USA
Hendrickson, Wayne A.
[1
]
机构:
[1] Columbia Univ, Howard Hughes Med Inst, Dept Biochem & Mol Biophys, New York, NY 10032 USA
A method has been developed to optimize the energy resolution of a horizontally focusing monochromator. The method consists of determining the optimum radius of curvature of the cylindrically bent monochromator crystal by minimizing the total diffracted X-ray flux measured through an X-ray absorption foil. When measured at an absorption edge a global minimum can be identified, which corresponds to the minimum energy band accepted along the entire length of the crystal. Experimental verification of this method has been validated by comparing X-ray fluorescent scans taken for a series of crystal curvatures and by directly measuring the X-ray beam profiles at the corresponding points. The actual optical configuration and asymmetric-cut parameter of the focusing monochromator on beamline X4C at the National Synchrotron Light Source are modeled and ray tracing simulations of the optical system are compared with direct beam profile measurements. (C) 2008 Elsevier B.V. All rights reserved.
机构:
IIT, CSRRI, BioCAT, Chicago, IL 60616 USA
IIT, Dept Biol Chem & Phys Sci, Chicago, IL 60616 USAIIT, CSRRI, BioCAT, Chicago, IL 60616 USA
Barrea, Raul A.
Huang, Rong
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机构:
Univ Chicago, Ctr Adv Radiat Sources, IMCA CAT, Chicago, IL 60637 USAIIT, CSRRI, BioCAT, Chicago, IL 60616 USA
Huang, Rong
Cornaby, Sterling
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Cornell Univ, Cornell High Energy Synchrotron Source, Ithaca, NY 14853 USA
Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USAIIT, CSRRI, BioCAT, Chicago, IL 60616 USA
Cornaby, Sterling
Bilderback, Donald H.
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Cornell Univ, Cornell High Energy Synchrotron Source, Ithaca, NY 14853 USA
Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USAIIT, CSRRI, BioCAT, Chicago, IL 60616 USA
Bilderback, Donald H.
Irving, Thomas C.
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h-index: 0
机构:
IIT, CSRRI, BioCAT, Chicago, IL 60616 USA
IIT, Dept Biol Chem & Phys Sci, Chicago, IL 60616 USAIIT, CSRRI, BioCAT, Chicago, IL 60616 USA
机构:
IIT, CSRRI, BioCAT, Chicago, IL 60616 USA
IIT, Dept Biol Chem & Phys Sci, Chicago, IL 60616 USAIIT, CSRRI, BioCAT, Chicago, IL 60616 USA
Barrea, Raul A.
Huang, Rong
论文数: 0引用数: 0
h-index: 0
机构:
Univ Chicago, Ctr Adv Radiat Sources, IMCA CAT, Chicago, IL 60637 USAIIT, CSRRI, BioCAT, Chicago, IL 60616 USA
Huang, Rong
Cornaby, Sterling
论文数: 0引用数: 0
h-index: 0
机构:
Cornell Univ, Cornell High Energy Synchrotron Source, Ithaca, NY 14853 USA
Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USAIIT, CSRRI, BioCAT, Chicago, IL 60616 USA
Cornaby, Sterling
Bilderback, Donald H.
论文数: 0引用数: 0
h-index: 0
机构:
Cornell Univ, Cornell High Energy Synchrotron Source, Ithaca, NY 14853 USA
Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USAIIT, CSRRI, BioCAT, Chicago, IL 60616 USA
Bilderback, Donald H.
Irving, Thomas C.
论文数: 0引用数: 0
h-index: 0
机构:
IIT, CSRRI, BioCAT, Chicago, IL 60616 USA
IIT, Dept Biol Chem & Phys Sci, Chicago, IL 60616 USAIIT, CSRRI, BioCAT, Chicago, IL 60616 USA