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Title: Fabrication and Performance of a Lithium X-Ray Lens

Abstract

Compound refractive lenses (CRLs) are arrays of concave lenses whose simple design and ease in implementation and alignment make them an attractive optic to focus x-rays. Factors considered in designing CRLs include lens material, fabrication, and assembly. Lithium is a desirable material because it provides the largest index of refraction decrement per unit absorption length of any solid elements. Lithium is a difficult material to handle and fabricate because it is rather malleable and more importantly, it reacts with moisture, and to a lesser extent, with oxygen and nitrogen in air. It also tends to adhere to molds and dies.We report on the fabrication and performance of a parabolic lithium lens consisting of 32 lenslets. Lenslets are fabricated in a precision press using an indenter with a parabolic profile and a 100 {mu}m tip radius. The indenter is made of stainless steel and is figured using a computer numerically controlled (CNC) machine. The lens is designed to have a 1.7 m focal length at 10 keV energy. In an experiment conducted at the Advanced Photon Source (APS), a 0.5 mm x 0.5 mm monochromatic undulator beam strikes the lens. A focal length of 1.71, a focal spot size of 24more » {mu}m x 34 {mu}m, and a peak intensity gain of over 18 are obtained.« less

Authors:
;  [1];  [2];  [3];  [1];  [4]
  1. Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 (United States)
  2. (United States)
  3. Chemical Engineering Division, Argonne National Laboratory, Argonne, IL 60439 (United States)
  4. Department of Mechanical, Materials, and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL 60616 (United States)
Publication Date:
OSTI Identifier:
21052688
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 879; Journal Issue: 1; Conference: 9. international conference on synchrotron radiation instrumentation, Daegu (Korea, Republic of), 28 May - 2 Jun 2006; Other Information: DOI: 10.1063/1.2436228; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ABSORPTION; ADVANCED PHOTON SOURCE; BEAM OPTICS; BEAM PRODUCTION; DESIGN; FABRICATION; GAIN; KEV RANGE; LENSES; LITHIUM; MONOCHROMATIC RADIATION; PERFORMANCE; PHOTON BEAMS; REFRACTIVE INDEX; STAINLESS STEELS; WIGGLER MAGNETS; X RADIATION

Citation Formats

Young, Kristina, Khounsary, Ali, Department of Mechanical, Materials, and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL 60616, Jansen, Andrew N., Dufresne, Eric M., and Nash, Philip. Fabrication and Performance of a Lithium X-Ray Lens. United States: N. p., 2007. Web. doi:10.1063/1.2436228.
Young, Kristina, Khounsary, Ali, Department of Mechanical, Materials, and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL 60616, Jansen, Andrew N., Dufresne, Eric M., & Nash, Philip. Fabrication and Performance of a Lithium X-Ray Lens. United States. doi:10.1063/1.2436228.
Young, Kristina, Khounsary, Ali, Department of Mechanical, Materials, and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL 60616, Jansen, Andrew N., Dufresne, Eric M., and Nash, Philip. Fri . "Fabrication and Performance of a Lithium X-Ray Lens". United States. doi:10.1063/1.2436228.
@article{osti_21052688,
title = {Fabrication and Performance of a Lithium X-Ray Lens},
author = {Young, Kristina and Khounsary, Ali and Department of Mechanical, Materials, and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL 60616 and Jansen, Andrew N. and Dufresne, Eric M. and Nash, Philip},
abstractNote = {Compound refractive lenses (CRLs) are arrays of concave lenses whose simple design and ease in implementation and alignment make them an attractive optic to focus x-rays. Factors considered in designing CRLs include lens material, fabrication, and assembly. Lithium is a desirable material because it provides the largest index of refraction decrement per unit absorption length of any solid elements. Lithium is a difficult material to handle and fabricate because it is rather malleable and more importantly, it reacts with moisture, and to a lesser extent, with oxygen and nitrogen in air. It also tends to adhere to molds and dies.We report on the fabrication and performance of a parabolic lithium lens consisting of 32 lenslets. Lenslets are fabricated in a precision press using an indenter with a parabolic profile and a 100 {mu}m tip radius. The indenter is made of stainless steel and is figured using a computer numerically controlled (CNC) machine. The lens is designed to have a 1.7 m focal length at 10 keV energy. In an experiment conducted at the Advanced Photon Source (APS), a 0.5 mm x 0.5 mm monochromatic undulator beam strikes the lens. A focal length of 1.71, a focal spot size of 24 {mu}m x 34 {mu}m, and a peak intensity gain of over 18 are obtained.},
doi = {10.1063/1.2436228},
journal = {AIP Conference Proceedings},
number = 1,
volume = 879,
place = {United States},
year = {Fri Jan 19 00:00:00 EST 2007},
month = {Fri Jan 19 00:00:00 EST 2007}
}