Results 201 to 210 of about 15,490 (252)

Soft x-ray imaging with toroidal mirrors

Applied Optics, 1978
The fabrication of small toroidal mirrors in tandem for x-ray imaging is discussed. First, a male mandrel is made by grinding and polishing a molybdenum rod. Then. a glass replica is cast and lightly polished. The method of polishing the male mandrel is described. A photograph of a copper mesh taken with a 8.3-A x ray is shown.
Sadao Aoki
exaly   +3 more sources

X-ray microscope with multilayer mirrors

Applied Optics, 1986
Troy W Barbee, James H Underwood, T W Barbee   +2 more
exaly   +3 more sources

Development of x-ray mirrors for x-ray telescopes

SPIE Proceedings, 2005
We have been developing X-ray mirrors for X-ray telescope using a ion-beam sputtering system. X-rays can be reflected by two processes, one is total reflection, and another is Bragg reflection. Total reflection is used for previous telescope below 10 keV. Its reflectivity determined by the optical constant. We suggests composite-layer mirror for soft X-
Keisuke Tamura, Chiaki Sakai, Nubuaki Yamada, Yasushi Ogasaka, Ryo Shibata   +4 more
openaire   +1 more source

X-Ray Mirror Assessment With Optical Light

SPIE Proceedings, 1988
The imaging capability of a thin foil x-ray mirror has been examined with optical light, using a laser beam and a wide optical parallel beam. These measurements reveal that (1) image broadening due to millimeter scale waviness (orange peel) of the aluminum substrate, partly intrinsic to the foil and partly caused during the foil treatment, is 1.2-min ...
H, Kunieda, P J, Serlemitsos
openaire   +2 more sources

X-Ray Performance Of The LAMAR Protoflight Mirror

SPIE Proceedings, 1988
A grazing incidence x-ray mirror in the Kirkpatrick-Baez geometry was constructed and tested. Its geometric aperture measures 20 by 30 cm and its length is 100 cm. The focal length is 3.4 m measured from the front to the focal plane. It is the first of eight mirrors to be built for the LAMAR experiment of the Shuttle High Energy Astrophysics Laboratory.
D G, Fabricant, L M, Cohen, P, Gorenstein   +2 more
openaire   +2 more sources

Foil X-ray mirrors

Astrophysics and Space Science, 1996
Nested thin foil reflectors have made possible light weight, inexpensive and fast grazing incidence X-ray mirrors for astronomical spectroscopy over a broad band. These mirrors were developed at Goddard for the US Shuttle program and were flown on NASA's shuttleborne Astro-l mission in December 1990.
Peter J. Serlemitsos, Yang Soong
openaire   +1 more source

Multilayer x-ray mirrors

Journal of Russian Laser Research, 1995
The angular, dispersive, polarization and energy features of multilayer x-ray optics are considered within the framework of unified theoretical approach. The ultimate optical parameters of multilayer structures are investigated, and the possibilities of their application to certain physical problems are discussed.
I. V. Kozhevnikov, A. V. Vinogradov
openaire   +1 more source

Design and development of the eROSITA x-ray mirrors

SPIE Proceedings, 2008
ABSTRACT MPE will provide the X-ray Survey Telescope eROSITA [5] for the Russian Spektrum-Roentgen-Gamma Mission [4] to be launched in 2011. The design of the X-ray mirror system is based on that of ABRIXAS: The bundle of 7 mirror modules with the short focal length of 1600 mm makes it s till a compact instrument while, however, its sensitivity in ...
Friedrich, P., Bräuninger, H., Budau, B., Burkert, W., Eder, J., Freyberg, M., Hartner, G., Mühlegger, M., Predehl, P., Erhard, M., Gutruf, S., Jugler, D., Kampf, D., Borghi, G., Citterio, O., Rossi, M., Valsecchi, G., Vernani, D., Zimmermann, M.   +18 more
openaire   +2 more sources

Efficiency of an elliptically shaped x-ray mirror

Applied Optics, 2004
Curved reflecting mirrors are widely used as x-ray optical elements for both laboratory and synchrotron radiation sources. In general, the mirror parameters are optimized by numerical simulation. We discuss an analytical approach that is useful for deriving the mirror parameters, including eccentricity, length, angular acceptance, and magnification. We
I Bukreeva, S Dabagov, S Lagomarsino
openaire   +4 more sources

X-ray interferometry of surfaces with Fresnel mirrors

Applied Optics, 2000
With a small double-mirror setup, we used grazing-x-ray interferometry to study nanometric steps. These one-dimensional steps were microfabricated upon the surface of one of the two mirrors; the other mirror provided the reference wave. Two geometries were studied.
S. MARCHESINI, K. FEZZAA, M. BELAKHOVSKY, COISSON, Roberto   +3 more
openaire   +2 more sources