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 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 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 Design Study of a Hard X ray Balloon Experiment written by G Bibbo and published by . This book was released on with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the field of hard X-ray and y-ray astronomy, there is increasing demand for new instruments having better energy resolution and more efficient charged particle background rejection than the present generation of inorganic scintillator spectrometers. These spectrometers are being replaced gradually by-cooled germanium solid state detectors, which have energy resolution many times better than the Hal scintillators. However, solid state detectors require complex cryogenic systems for their successful operation, and their background counting rates are comparable with those of NaI scintillators. For the detection of X-rays in the energy range 15-100 keV, a proportional counter has been developed at MSSL which uses a novel technique of charged particle background discrimination and could provide an alternative instrument to the Nal crystal scintillators. This detector, known here as the "Escape Gated Detector", has an improved energy resolution and a much more efficient background rejection compared with the conventional proportional counters. These characteristics make the Escape Gated Detector suitable for spectroscopy measurements of hard X-rays, an area of investigation which is still unexplored, and in particular for the detection and search of spectral line features such as those observed from Her X-1. A balloon experiment for the detection of X-rays in the energy range 40-100 keV has been envisaged for this detector. The sensitivity of a balloon borne X-ray detector is limited by the radiation environment present at balloon altitudes. For this reason Monte Carlo computer models have been developed to determine: (1) the quantum efficiency of the detector for different geometry and size. (2) the optimum shield required to screen the detector against atmospheric X-rays in the energy region of interest, and (3) the angular response function of the collimator. For the reader, the principal parameters of the balloon experiment are summarised in table I.
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 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 X ray Detectors in Astronomy written by G. W. Fraser and published by Cambridge University Press. This book was released on 1989-05-25 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 Handbook of X ray and Gamma ray Astrophysics written by Cosimo Bambi and published by Springer Nature. This book was released on with total page 5912 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book X ray and Gamma ray Instrumentation for Astronomy written by and published by . This book was released on 2000 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transactions of the International Astronomical Union written by Derek McNally and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 937 pages. Available in PDF, EPUB and Kindle. Book excerpt: The XXth General Assembly of the International Astronomical Union was held in Baltimore, Maryland USA from August 02 to 11, 1988. The Inaugural Ceremony on August 02 was held in the presence of representatives of the United States Governn:ent, t~e S~ate of Maryland, the City of Baltimore and the host institution -the Johns Hopkins Umverslty- as well as of the National and Local Organising Committees. The scientific programme maintained the high standards of the Union and the scientific proceedings may be found either in this volume or in volume 8 of Highlights of Astronomy. The scientific programme was organised by the 40 Commission Presidents and coordinated by the General Secretary (1985-1988), Dr. J.-P. Swings. The local arrangements were effectively made through the National Organising Committee under the Chairmanship of Prof. F. Drake and the Local Organising Committee under the co-Chairmanship of Prof. A. Oavidsen and Dr. R. Giacconi. The smooth day to day operation of the meeting resulted from the incomparable dedication of Karen Weinstock and Harold Screen.
Download or read book Developing Basic Space Science World Wide written by Willem Wamsteker and published by Springer Science & Business Media. This book was released on 2005-12-28 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: ? J. Andersen Niels Bohr Institute for Astronomy Physics and Geophysics Astronomical Observatory Copenhagen [email protected] The development of astronomy worldwide begins at the roots: Already from childhood, humans of all nations and civilizations seem to share an innate fascination with the sky. Yet, people in different regions of the world have vastly different possibilities for pursuing this interest. In wealthy, industrialised societies the way is open to a school or higher education in science, possibly leading to a career in astronomy or basic or applied space science for the benefit of the country as well as the individual. In other regions, neither the financial nor the trained human resources are sufficient to offer that avenue to the future of the young generation, or those intellectual resources to the development of their country. This book addresses ways and means by which these obstacles can be, if not fully overcome, then at least significantly reduced.
Download or read book EUV X ray and Gamma ray Instrumentation for Astronomy written by and published by . This book was released on 1998 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Literature 1975 Part 2 written by Siegfried Böhme and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 757 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book X ray Photon Processing Detectors written by Conny Hansson and published by Springer Nature. This book was released on 2023-11-14 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides readers a good overview of some of most recent advances in the field of hybrid pixelated detectors for X-ray imaging. Coverage includes both technology and applications, with an in-depth review of the research topics conducted at leading research institutions in the world. The conversion of the X-ray signal into an analogue/digital value is discussed, as well as a review of CMOS chips used for X-ray image sensors. Applications of hybrid pixel detectors are discussed, such as medical imaging, high energy physics, space, non-destructive testing and security. Provides coverage of a broad range of topics, from international experts in academia and industry; Includes in-depth analysis of how to optimize X-ray detection and electronics for X-ray detection; Covers both technology and applications in a number of different domains.
Download or read book LC Science Tracer Bullet written by and published by . This book was released on 1972 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
