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Proceedings Paper

Nickel-plated invar mirrors for synchrotron radiation beam lines
Author(s): Malcolm R. Howells; P. Burt; Daniela Cambie; Robert M. Duarte; A. Franck; Steven C. Irick; Alastair A. MacDowell; D. MacGill; R. Paquin; David W. Plate
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Paper Abstract

We report the experience of the Advanced Light Source group in designing and building a series of nine electroless nickel-plated invar mirrors. The first four mirrors constructed appeared initially to be good but later it became evident that the nickel plating on all nine had been done improperly. The problem first appeared as blister-like defects about half a micron high and one to three centimeters wide. The cause turned out to be local separation of the plating from the substrate. In this paper we discuss the technical issues involved in building mirrors from invar and in preparing for and applying the needed electroless nickel coatings. We describe the studies that we carried out to evaluate the questions of adhesion, stress and polishability and report broad success in remanufacturing four of the mirrors. At time of writing one of the four has met specification showing good figure (0.8 μr rms) and finish (6 Å rms).

Paper Details

Date Published: 24 December 2002
PDF: 10 pages
Proc. SPIE 4782, X-Ray Mirrors, Crystals, and Multilayers II, (24 December 2002); doi: 10.1117/12.453759
Show Author Affiliations
Malcolm R. Howells, Lawrence Berkeley National Lab. (United States)
P. Burt, Acteron Corp. (United States)
Daniela Cambie, Lawrence Berkeley National Lab. (United States)
Robert M. Duarte, Lawrence Berkeley National Lab. (United States)
A. Franck, Lawrence Berkeley National Lab. (United States)
Steven C. Irick, Lawrence Berkeley National Lab. (United States)
Alastair A. MacDowell, Lawrence Berkeley National Lab. (United States)
D. MacGill, Lawrence Berkeley National Lab. (United States)
R. Paquin, Optical Sciences Ctr./Univ. of Arizona (United States)
David W. Plate, Lawrence Berkeley National Lab. (United States)


Published in SPIE Proceedings Vol. 4782:
X-Ray Mirrors, Crystals, and Multilayers II
Andreas K. Freund; Albert T. Macrander; Tetsuya Ishikawa; James L. Wood, Editor(s)

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