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Development Of Polishing Methods For Chemical Vapor Deposited Silicon Carbide Mirrors For Synchrotron Radiation
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Book Synopsis Development of Polishing Methods for Chemical Vapor Deposited Silicon Carbide Mirrors for Synchrotron Radiation by :
Download or read book Development of Polishing Methods for Chemical Vapor Deposited Silicon Carbide Mirrors for Synchrotron Radiation written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Material properties of Chemical Vapor Deposited Silicon Carbide (CVD SiC) make it ideal for use in mirrors for synchrotron radiation experiments. We developed methods to grind and polish flat samples of CVD SiC down to measured surface roughness values as low as 1.1 Angstroms rms. We describe the processing details, including observations we made during trial runs with alternative processing recipes. We conclude that pitch polishing using progressively finer diamond abrasive, augmented with specific water based lubricants and additives, produces superior results. Using methods based on these results, a cylindrical and a toroidal mirror, each about 100 x 300mm, were respectively finished by Continental Optical and Frank Cooke, Incorporated. WYCO Interferometry shows these mirrors have surface roughness less than 5.7 Angstroms rms. These mirrors have been installed on the LLNL/UC X-ray Calibration and Standards Facility at the Stanford Synthrotron Radiation Laboratory.
Book Synopsis Evaluation of CVD Silicon Carbide for Synchrotron Radiation Mirrors by :
Download or read book Evaluation of CVD Silicon Carbide for Synchrotron Radiation Mirrors written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical vapor deposited silicon carbide (CVD SiC) is a recent addition to the list of materials suitable for use in the harsh environment of synchrotron radiation (SR) beam lines. SR mirrors for use at normal incidence must be ultrahigh vacuum compatible, must withstand intense x-ray irradiation without surface damage, must be capable of being polished to an extremely smooth surface finish, and must maintain surface figure under thermal loading. CVD SiC exceeds the performance of conventional optical materials in all these areas. It is, however, a relatively new optical material. Few manufacturers have experience in producing optical quality material, and few opticians have experience in figuring and polishing the material. The CVD material occurs in a variety of forms, sensitively dependent upon reaction chamber production conditions. We are evaluating samples of CVD SiC obtained commercially from various manufacturers, representing a range of deposition conditions, to determine which types of CVD material are most suitable for superpolishing. At the time of this writing, samples are being polished by several commercial vendors and surface finish characteristics are being evaluated by various analytical methods.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Silicon Carbide Mirrors for High Power Applications by :
Download or read book Silicon Carbide Mirrors for High Power Applications written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The advent of synchrotron radiation (SR) sources and high energy lasers (HEL) in recent years has brought about the need for optical materials that can withstand the harsh operating conditions in such devices. SR mirrors must be ultra-high vacuum compatible, must withstand intense x-ray irradiation without surface damage, must maintain surface figure under thermal loading and must be capable of being polished to an extremely smooth surface finish. Chemical vapor deposited (CVD) silicon carbide in combination with sintered substrate material meets these requirements and offers additional benefits as well. It is an extremely hard material and offers the possibility of being cleaned and recoated many times without degradation of the surface finish, thereby prolonging the lifetime of expensive optical components. It is an extremely strong material and offers the possibility of weight reduction over conventional mirror materials.
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1983 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Grazing Incidence Optics for Astronomical and Laboratory Applications by : Stuart C. Bowyer
Download or read book Grazing Incidence Optics for Astronomical and Laboratory Applications written by Stuart C. Bowyer and published by . This book was released on 1988 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book INIS Atomindex written by and published by . This book was released on 1987 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1987 with total page 1396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook on Synchrotron Radiation by : Ernst-Eckhard Koch
Download or read book Handbook on Synchrotron Radiation written by Ernst-Eckhard Koch and published by . This book was released on 1983 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Engineering written by and published by . This book was released on 1995 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publishes papers reporting on research and development in optical science and engineering and the practical applications of known optical science, engineering, and technology.
Book Synopsis Springer Handbook of Lasers and Optics by : Frank Träger
Download or read book Springer Handbook of Lasers and Optics written by Frank Träger and published by Springer Science & Business Media. This book was released on 2012-05-05 with total page 1704 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition features numerous updates and additions. Especially 4 new chapters on Fiber Optics, Integrated Optics, Frequency Combs and Interferometry reflect the changes since the first edition. In addition, major complete updates for the chapters: Optical Materials and Their Properties, Optical Detectors, Nanooptics, and Optics far Beyond the Diffraction Limit. Features Contains over 1000 two-color illustrations. Includes over 120 comprehensive tables with properties of optical materials and light sources. Emphasizes physical concepts over extensive mathematical derivations. Chapters with summaries, detailed index Delivers a wealth of up-to-date references.
Book Synopsis Optics for High-brightness Synchrotron Radiation Beamlines by :
Download or read book Optics for High-brightness Synchrotron Radiation Beamlines written by and published by . This book was released on 1996 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Silicon Carbide Mirror Substrate Replication by Chemical Vapor Deposition by : Michael A. Pickering
Download or read book Silicon Carbide Mirror Substrate Replication by Chemical Vapor Deposition written by Michael A. Pickering and published by . This book was released on 1994 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy and Technology Review written by and published by . This book was released on 1987 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Low Scatter Surfaces on Silicon Carbide by : MB. Magida
Download or read book Low Scatter Surfaces on Silicon Carbide written by MB. Magida and published by . This book was released on 1990 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reaction bonded silicon carbide (RB SiC) can be readily fabricated to near net shape and mirror blanks produced by this method can potentially be less costly than those fabricated by chemical vapor deposition (CVD). However, RB SiC is two phase, SiC and up to 30% silicon (Si), and can not normally be directly polished to low scatter and roughness levels due to the difference in hardness of the two phases. We have investigated the polishability of RB SiC as a function of Si content and microstructure. Our results show that with a favorable microstructure, RB SiC can be polished to less than 10Å rms. For reduced roughness and lower scatter surfaces, we have developed low temperature deposition techniques to apply polishable, single phase coatings to the figured two phase surfaces. Scatter and roughness measurements show levels are comparable to CVD SiC.
Book Synopsis Fabrication of Torsional Mirror Using SCREAM Process and Chemical Mechanical Polishing by : Sangtae Park
Download or read book Fabrication of Torsional Mirror Using SCREAM Process and Chemical Mechanical Polishing written by Sangtae Park and published by . This book was released on 1995 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
