Biography:

In the past RICHARD B. HOOVER has collaborated on articles with David L. Shealy. One of their most recent publications is Design of a normal incidence multilayer imaging X-ray microscope☆. Which was published in journal Journal of X-Ray Science and Technology.

More information about RICHARD B. HOOVER research including statistics on their citations can be found on their Copernicus Academic profile page.

RICHARD B. HOOVER's Articles: (2)

Design of a normal incidence multilayer imaging X-ray microscope☆

AbstractNormal incidence multilayer Cassegrain x-ray telescopes were flown on the Stanford/ MSFC Rocket X-Ray Spectroheliograph. These instruments produced high spatial resolution images of the Sun and conclusively demonstrated that doubly reflecting multilayer x-ray optical systems are feasible. The images indicated that aplanatic imaging soft x-ray/EUV microscopes should be achievable using multilayer optics technology. We have designed a doubly reflecting normal incidence multilayer imaging x-ray microscope based on the Schwarzschild configuration. The Schwarzschild microscope utilizes two spherical mirrors with concentric radii of curvature which are chosen such that the third-order spherical aberration and coma are minimized. We discuss the design of the microscope and the results of the optical system ray trace analysis which indicates that diffraction-limited performance with 600 Å spatial resolution should be obtainable over a 1 mm field of view at a wavelength of 100 Å. Fabrication of several imaging soft x-ray microscopes based upon these designs, for use in conjunction with x-ray telescopes and laser fusion research, is now in progress. High resolution aplanatic imaging x-ray microscopes using normal incidence multilayer x-ray mirrors should have many important applications in advanced x-ray astronomical instrumentation, x-ray lithography, biological, biomedical, metallurgical, and laser fusion research.

Advances in Solar and Cosmic X-Ray Astronomy: A Survey of Experimental Techniques and Observational Results

Publisher SummaryThis chapter discusses the advances in solar and cosmic X–ray astronomy. Discrete sources of X-ray emission in the corona consist of very hot plasmas confined by magnetic fields, and X-ray bursts seem to be related to instabilities in these fields. Solar X-ray observations touch on several problems associated with plasma confinement as encountered in controlled nuclear fusion. Solar X-radiation gives information about plasmas under conditions presently unobtainable in the laboratory. X-ray bursts are emitted by the hottest or most energetic regions within solar flares, so they may be the key to understanding these complex phenomena. The development of the V-2 rocket permitted man to begin explorations of X-rays from celestial objects and gave birth to the youngest branch of an ancient science. The greatest advancement in cosmic X-ray astronomy has been achieved with the first Small Astronomy Satellite instrumentation carried on board. This satellite had revealed the presence of several previously unknown galactic X-ray sources, X-ray pulsars with unusual properties, and possibly 45 extragalactic X-ray sources, including Cygnus A, M 82, NGC 4696, and NGC 4151.

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