X-ray monochromator geometry for focusing synchrotron radiation above 10 keV

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The relative merits of crystals versus mirrors for focusing synchrotron radiation at energies above 10 keV are explored. As mirrors have critical angles of reflection typically 1/20 of the Bragg scattering angles for crystals, large mirror surface areas are required. Sagittal focusing is weak for mirrors and limits the amount of radiation intercepted. Crystals bent to a simple cylindrical curvature are shown to accept large divergences of radiation for sagittal focusing. At a magnification near 1/3, the cylindrically curved crystals are shown to make the proper Bragg angle for energies above 5 keV and for divergences larger than 10 mrad ... continued below

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Pages: 18

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Sparks, C.J. Jr.; Borie, B.S. & Hastings, J.B. January 1, 1979.

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The relative merits of crystals versus mirrors for focusing synchrotron radiation at energies above 10 keV are explored. As mirrors have critical angles of reflection typically 1/20 of the Bragg scattering angles for crystals, large mirror surface areas are required. Sagittal focusing is weak for mirrors and limits the amount of radiation intercepted. Crystals bent to a simple cylindrical curvature are shown to accept large divergences of radiation for sagittal focusing. At a magnification near 1/3, the cylindrically curved crystals are shown to make the proper Bragg angle for energies above 5 keV and for divergences larger than 10 mrad and to produce x-ray beams which are approximately focused.

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Pages: 18

Notes

Dep. NTIS, PC A02/MF A01.

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  • National conference on synchrotron radiation instrumentation, Gaithersburg, MD, USA, 4 Jun 1979

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  • Report No.: BNL-26936
  • Report No.: CONF-790651-8
  • Grant Number: EY-76-C-02-0016
  • Office of Scientific & Technical Information Report Number: 5615193
  • Archival Resource Key: ark:/67531/metadc1087419

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1979

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  • Feb. 10, 2018, 10:06 p.m.

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  • March 21, 2018, 12:53 p.m.

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Sparks, C.J. Jr.; Borie, B.S. & Hastings, J.B. X-ray monochromator geometry for focusing synchrotron radiation above 10 keV, article, January 1, 1979; United States. (digital.library.unt.edu/ark:/67531/metadc1087419/: accessed April 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.