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Proceedings Paper

Microarray collimators for x rays and neutrons
Author(s): Alberto Cimmino; Brendan E. Allman; Anthony G. Klein; William A. Hamilton; Ian S. Anderson; Bernard Hamelin; Peter Hoghoj; Pierre Bastie
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Paper Abstract

We describe the fabrication techniques of novel, compact optical elements for collimating and/or focusing beams of X- rays or thermal neutrons. These optical elements are solid composite arrays consisting of regular stacks of alternating micro-foils, analogous in action to Soller slit collimators, but up to three orders of magnitude smaller. The arrays are made of alternating metals with suitable refractive indices for reflection and/or absorption of the specific radiation. In one implementation, the arrays are made of stacked micro-foils of transmissive elements (Al, Cu) coated and/or electroplated with absorbing elements (Gd, Cd), which are repeatedly rolled or drawn and restacked to achieve the required collimation parameters. We present results of these collimators using both X-rays and neutrons. The performance of the collimating element is limited only by the choice of micro-foil materials and the uniformity of their interfaces.

Paper Details

Date Published: 31 August 1998
PDF: 9 pages
Proc. SPIE 3511, Micromachining and Microfabrication Process Technology IV, (31 August 1998); doi: 10.1117/12.324325
Show Author Affiliations
Alberto Cimmino, Univ. of Melbourne (Australia)
Brendan E. Allman, Univ. of Melbourne (Australia)
Anthony G. Klein, Univ. of Melbourne (Australia)
William A. Hamilton, Oak Ridge National Lab. (United States)
Ian S. Anderson, Institut Laue-Langevin (United States)
Bernard Hamelin, Institut Laue-Langevin (France)
Peter Hoghoj, Institut Laue-Langevin (France)
Pierre Bastie, Univ. Joseph Fourier-Grenoble I (France)

Published in SPIE Proceedings Vol. 3511:
Micromachining and Microfabrication Process Technology IV
James H. Smith, Editor(s)

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