Potential of a beryllium x-ray lens Metadata

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Title

  • Main Title Potential of a beryllium x-ray lens

Creator

  • Author: Smither, R.K.
    Creator Type: Personal
  • Author: Khounsary, A.M.
    Creator Type: Personal
  • Author: Xu, S.
    Creator Type: Personal
    Creator Info: Argonne National Lab., IL (United States). Advanced Photon Source

Contributor

  • Sponsor: United States. Department of Energy. Office of Energy Research.
    Contributor Type: Organization
    Contributor Info: USDOE Office of Energy Research, Washington, DC (United States)

Publisher

  • Name: Argonne National Laboratory
    Place of Publication: Illinois
    Additional Info: Argonne National Lab., IL (United States)

Date

  • Creation: 1997-09-01

Language

  • English

Description

  • Content Description: The use of refractive lenses for focusing x-ray beams has been the subject of publications since the early 1980s. Detailed calculations have been made for different shapes for the refractive lens: cylindrical, spherical, parabolic, and for a Fresnel-type refractive lens. The main drawback to the use of a single refractive lens to focus x-rays is that the index of refraction (n = 1 {minus} {delta}) is very close to 1, which results in a lens with a very long focal length. Recently Snigerov and others have suggested and experimentally demonstrated, using cylindrical-shaped lenses, that this problem of long focal lengths can be overcome by using many lenses in series. Each lens refracts the photon through a small angle, but the sum of these sequential changes in direction can be moderately larger. This increase in effective refraction angle reduces the focal length of the lens to a few meters or less and makes the multi-element lens a much more useful instrument for focusing x-rays. This paper, annualizes the expected performance of a lens consisting of a series of aligned hollow spheres in a beryllium substrate. The use of hollow spheres rather than hollow cylinders produces focusing of the x rays into a small focal spot in contrast to the single-directional focusing of the hollow cylinders, which produces a line focus. Two multi-element lenses have been constructed: one with 20 1-mm-diameter hollow spheres in an aluminum substrate, and one with 50 hollow spheres, 1 mm in diameter, in a beryllium substrate. Some construction details and calculations of the expected performance, are given for these two multi-element lenses.
  • Physical Description: 16 p.

Subject

  • Keyword: X-Ray Sources
  • STI Subject Categories: 43 Particle Accelerators
  • Keyword: Theoretical Data
  • Keyword: Optical Systems
  • Keyword: Accelerator Facilities
  • Keyword: Design
  • Keyword: Beam Optics
  • Keyword: Focusing
  • Keyword: Substrates
  • Keyword: Beryllium
  • Keyword: Performance
  • Keyword: Lenses

Source

  • Conference: Annual meeting of the Society of Photo-Optical Instrumentation Engineers, San Diego, CA (United States), 27 Jul - 1 Aug 1997

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Other: DE97054564
  • Report No.: ANL/XFD/CP--93695
  • Report No.: CONF-970706--
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/554898
  • Office of Scientific & Technical Information Report Number: 554898
  • Archival Resource Key: ark:/67531/metadc690480

Note

  • Display Note: INIS; OSTI as DE97054564