Download or read book Development of High Resolution Imaging Detectors for X Ray Astronomy written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-12-29 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This final report summarizes our past activities and discusses the work performed over the period of 1 April 1990 through 1 April 1991 on x-ray optics, soft x-ray (0.1 - 10 KeV) imaging detectors, and hard x-ray (10 - 300 KeV) imaging detectors. If microchannel plates (MCPs) can be used to focus x-rays with a high efficiency and good angular resolution, they will revolutionize the field of x-ray optics. An x-ray image of a point source through an array of square MCP pores compared favorably with our ray tracing model for the MCP. Initial analysis of this image demonstrates the feasibility of MCPs for soft x-rays. Our work continues with optimizing the performance of our soft x-ray MCP imaging detectors. This work involves readout technology that should provide improved MCP readout devices (thin film crossed grid, curved, and resistive sheets), defect removal in MCPs, and photocathode optimization. In the area of hard x-ray detector development we have developed two different techniques for producing a CsI photocathode thickness of 10 to 100 microns, such that it is thick enough to absorb the high energy x-rays and still allow the photoelectrons to escape to the top MCP of a modified soft x-ray imaging detector. The methods involve vacuum depositing a thick film of CsI on a strong back, and producing a converter device that takes the place of the photocathode. Murray, S. S. and Schwartz, D. A. NASA-CR-193653, NAS 1.26:193653 NAG5-605...
Download or read book Development of High Resolution Imaging Detectors for X ray Astronomy written by Stephen S. Murray and published by . This book was released on 1985 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Resolution Imaging written by Swapan K. Saha and published by CRC Press. This book was released on 2015-01-28 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interferometric observations need snapshots of very high time resolution of the order of (i) frame integration of about 100 Hz or (ii) photon-recording rates of several megahertz (MHz). Detectors play a key role in astronomical observations, and since the explanation of the photoelectric effect by Albert Einstein, the technology has evolved rather
Download or read book Imaging Detectors In High Energy Astroparticle And Medical Physics Proceedings Of The Ucla International Conference written by Jun Park and published by World Scientific. This book was released on 1996-10-04 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume addresses four major topical areas: imaging detectors for astrophysics application, noble liquid compound, medical application and high energy application.Noble liquid and scintillating fiber technology, which opened a new era in high spatial (energy) resolution, high speed detection of charged particles and gamma rays, is developing further and its application seems to be concentrated in three major directions: astrophysics, high energy physics and medical imaging. In addition, the book covers new developments in imaging photon detectors, hybrid type (fiber and noble liquid) detectors for WIMP search and several promising techniques for new imaging detectors.
Download or read book Electronic Imaging in Astronomy written by Ian S. McLean and published by Springer Science & Business Media. This book was released on 2008-08-17 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Electronic Imaging in Astronomy: Detectors and Instrumentation describes the remarkable developments that have taken place in astronomical detectors and instrumentation in recent years – from the invention of the charge-coupled device (CCD) in 1970 to the current era of very large telescopes, such as the Keck 10-meter telescopes in Hawaii with their laser guide-star adaptive optics which rival the image quality of the Hubble Space Telescope. Authored by one of the world’s foremost experts on the design and development of electronic imaging systems for astronomy, this book has been written on several levels to appeal to a broad readership. Mathematical expositions are designed to encourage a wider audience, especially among the growing community of amateur astronomers with small telescopes with CCD cameras. The book can be used at the college level for an introductory course on modern astronomical detectors and instruments, and as a supplement for a practical or laboratory class.
Download or read book X ray Detectors in Astronomy written by G. W. Fraser and published by Cambridge University Press. This book was released on 2009-06-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1989, this book provides a comprehensive review of the detection techniques that are used in X-ray astronomy. Since the first discovery of a cosmic X-ray source in 1962, there has been rapid growth in X-ray astronomy, which has largely been made possible by enormous advances in the capabilities of photon counting instrumentation. The book describes the first 25 years of astronomical X-ray instrumentation and summarises the areas of current detector research, giving particular emphasis to imaging devices and to non-dispersive devices of high spectral resolution. It is the first book to give such a comprehensive treatment of the subject, and will provide astronomers with a valuable summary of detection techniques.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a High Resolution Imaging Capability for Observing Cosmic Sources in the Hard X ray written by Fiona Anne Harrison and published by . This book was released on 1993 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detector Technologies for Future High Throughput and Fine Resolution X ray Telescopes written by Samuel Hull and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The next generation of soft X-ray telescopes plan to push the boundaries of X-ray astronomy by featuring large increases in effective area. The most difficult observations, such as will be required to fully explore the low-luminosity and high-redshift X-ray Universe, will need to couple this high throughput with very fine angular resolution -- as is currently being studied for the Lynx mission concept. At the focal planes of instruments equipped to carry out this work will be arrays of small pixels (to oversample the telescope point spread function) that are capable of low-noise, rapid readout (to avoid pile-up of X-ray photons). While traditional X-ray charge-coupled devices (CCDs) have now been the workhorse imaging sensors in X-ray astronomy for ~ 25 years, these requirements -- specifically low-noise, rapid readout -- are outside their capabilities. Active pixel sensors (APSs) are a natural alternative due to their highly parallel readout. They also offer several other advantages, including less susceptibility to radiation damage, low power consumption, and nondestructive and windowed readout. Several APS technologies are currently under development; this work focuses on hybrid complementary metal-oxide-semiconductor (CMOS) detectors, with additional smaller-scale discussion of depleted p-channel field-effect transistors (DePFETs). Through detailed characterization of these technologies, this dissertation aims to demonstrate the advancement of hybrid CMOS detectors (HCDs) and DePFETs towards future flagship X-ray space telescopes like Lynx. After briefly reviewing the history and current state of X-ray astronomy, the dissertation continues with a discussion of the physics of soft X-ray detection, along with details on the operation of CCDs, HCDs, and DePFETs. Following this is a description of the design, testing, and full characterization results of prototype small-pixel HCDs -- which have been specifically developed to meet the needs of a Lynx-class observatory. Results include measurements of the read noise, dark current, pixel well capacity, pixel crosstalk, charge diffusion, pixel-to-pixel gain variation, and spectral resolution. The subsequent section features initial testing results from prototype DePFETs sensors, along with a discussion of their possible development path. Finally, the dissertation closes with an exploration of the exciting novel X-ray astronomy that will be possible with future instruments that may utilize these technologies.
Download or read book Development of an Imaging X ray Detector for High Altitude Balloon borne Astronomy written by Takahisa Minamitani and published by . This book was released on 2000 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Hard X ray Imaging Detectors for the High Energy Focusing Telescope written by Chi Ming Hubert Chen and published by . This book was released on 2008 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 15 year Plan for X ray Astronomy 1994 2008 written by United States. X-ray Astronomy Program Working Group and published by . This book was released on 1994 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Working Papers written by National Research Council and published by National Academies Press. This book was released on 1991-02-01 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains working papers on astronomy and astrophysics prepared by 15 non-National Research Council panels in areas ranging from radio astronomy to the status of the profession.
Download or read book EUV X ray and Gamma ray Instrumentation for Astronomy and Atomic Physics written by Charles J. Hailey and published by . This book was released on 1989 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1995 with total page 1096 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1992 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1994 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
