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31 August 1998 Microarray collimators for x rays and neutrons
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Proceedings Volume 3511, Micromachining and Microfabrication Process Technology IV; (1998)
Event: Micromachining and Microfabrication, 1998, Santa Clara, CA, United States
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.
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Alberto Cimmino, Brendan E. Allman, Anthony G. Klein, William A. Hamilton, Ian S. Anderson, Bernard Hamelin, Peter Hoghoj, and Pierre Bastie "Microarray collimators for x rays and neutrons", Proc. SPIE 3511, Micromachining and Microfabrication Process Technology IV, (31 August 1998);

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