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<title>Multilayered supermirror structures for hard x-ray synchrotron and astrophysics instrumentation</title>

1994; SPIE; Volume: 2011; Linguagem: Inglês

10.1117/12.167210

1996-756X

Karsten D. Joensen, Peter Høghøj, Finn E. Christensen, P. Gorenstein, Jean Susini, Eric Ziegler, Andreas K. Freund, James L. Wood,

Particle Accelerators and Free-Electron Lasers

By varying the thickness of the layers in a multilayer down through the structure, it is possible to produce wide-band reflectors. We report measurements and modeling of the reflectivity of Ni/C, Mo/Si and W/Si supermirrors, at energies ranging from 8 to 130 keV, and discuss the performance of two possible applications: a Kirkpatrick-Baez telescope, and a multiwavelength hard X-ray focusing reflector. The supermirrors perform as expected, and model-fits over the full range have been attempted with some success. We conclude that the supermirror coatings do indeed look very promising as hard x-ray optics for synchrotron applications, while some work on highly nested structures and supermirror coatings on very thin large substrates is necessary, before the feasibility of employing large-area supermirrors for hard X-ray astronomy is determined.