Download or read book The Dielectric Bolometer a New Type of Thermal Radiation Detector written by R. A. Hanel and published by . This book was released on 1960 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal detectors for the infrared, such as thermocouples and bolometers, are limited in their ultimate sensitivity predominantly by Johnson noise rather than temperature noise. Low noise figures are hard to achieve since Johnson noise preponderates temperature noise, which is the only essential noise for thermal detectors. The dielectric constants of some materials are sufficiently temperature dependent to make a new type of bolometer feasible. The basic theory of a dielectric bolometer, as shown here, promises noise figures below 3 decibels even at chopper frequencies well above the 1/tau value of the detector. Ferroelectrics such as barium-strontium titanate and others seem to be well suited for radiation-cooled dielectric bolometers.

Download or read book Bolometers written by Unil Perera and published by BoD – Books on Demand. This book was released on 2012-03-09 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrared Detectors and technologies are very important for a wide range of applications, not only for Military but also for various civilian applications. Comparatively fast bolometers can provide large quantities of low cost devices opening up a new era in infrared technologies. This book deals with various aspects of bolometer developments. It covers bolometer material aspects, different types of bolometers, performance limitations, applications and future trends. The chapters in this book will be useful for senior researchers as well as beginning graduate students.

Download or read book Detection of Light written by George Rieke and published by Cambridge University Press. This book was released on 2003 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detection of Light provides a comprehensive overview of the important approaches to photon detection from ultraviolet to submillimeter spectral regions. This expanded and fully updated second edition discusses recently introduced types of detector such as superconducting tunnel junctions, hot electron bolometer mixers, and fully depleted CCDs. Material from many disciplines is combined into a comprehensive and unified treatment of the detection of light, with emphasis on the underlying physical principles. This self-contained text assumes only an undergraduate level of physics, and is suitable for advanced undergraduate and graduate students.

Download or read book Optimization of Hot Electron Bolometers for THz Radiation written by Axel Stockhausen and published by KIT Scientific Publishing. This book was released on 2014-07-20 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hot-electron bolometers are fast and low noise radiation detectors which can be used for many different applications. The aim of this work was to optimize the fabrication process of hot-electron bolometers and gain a deeper understanding of the underlying processes. To achieve this, the fabrication of the superconducting thin films was optimized and the superconducting properties of the films were analyzed. Detectors fabricated using the results showed a record value for the noise temperature.

Download or read book Model of the Response Function of CUORE Bolometers written by Marco Vignati and published by Springer Science & Business Media. This book was released on 2011-04-29 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large mass bolometers are used in particle physics experiments to search for rare processes, like neutrinoless double beta decay and dark matter interactions. In the next years the CUORE experiment (a 1 Ton detector composed by 1000 crystals of TeO2 operated as bolometers in a large cryostat at 10mK) will be the particle physics experiment with the highest chance of discovering the Majorana neutrino, a long standing and yet fundamental question of particle physics. The study presented in this book was performed on the bolometers of the CUORE experiment. The response function of these detectors is not linear in the energy range of interest, and it changes with the operating temperature, worsening the performances. The nonlinearity appeared to be dominated by the thermistor and the biasing circuit used to read the bolometer, and was modeled using few measurable parameters. A method to obtain a linear response is the result of this work. It allows a great improvement of the detector operation and data analysis. With a foreword by Fernando Ferroni.

Download or read book Journal of Research of the National Bureau of Standards written by and published by . This book was released on 1959 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Bureau of Standards Handbook written by and published by . This book was released on 1961 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Bureau of Standards Handbook written by United States. National Bureau of Standards and published by . This book was released on 1961 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Research of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1949-07 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Miscellaneous Publications written by Charles Greeley Abbot and published by . This book was released on 1909 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Tech Brief written by United States. National Aeronautics and Space Administration Technology Utilization Division and published by . This book was released on with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Smithsonian Miscellaneous Collections written by and published by . This book was released on 1925 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microbolometers written by Nuggehalli Ravindra and published by Woodhead Publishing. This book was released on 2021-12-01 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbolometers: Fundamentals, Materials, and Recent Developments describes the fundamentals of microbolometers, their historic evolution, operational principles and material choices. It also explains the impact of materials on the processing and development of device characteristics. Sections address various aspects of optical properties and recommend models of properties of materials of interest for the fabrication of the uncooled microbolometers. In addition, the book presents two case studies, Honeywell and Texas Instruments, that focus on the design and manufacture of microbolometers. Finally, recent developments, applications, patents and future trends are presented. The chapter on patents will summarize the strengths and weaknesses of each of the technologies. “Please note that there is an error on the Dedication page, it should read: “To my sister, Math. G.Y. Premalatha, and my brother-in-law, the late Professor G.N. Yoganarasimhan, Professor of Water Resources Engineering and Management, for showing me the direction Describes the fundamentals of uncooled infrared detectors, operational principles and material approaches Includes case studies based on Honeywell and Texas Instruments’ work on microbolometers Provides analyses of current patents with a look towards their strengths and weaknesses

Download or read book Dimensions written by and published by . This book was released on 1967 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Code of Federal Regulations of the United States of America written by and published by . This book was released on 1967 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Code of Federal Regulations is the codification of the general and permanent rules published in the Federal Register by the executive departments and agencies of the Federal Government.

Download or read book Methods of Investigating the Atmosphere with Rockets and Satellites written by Aleksandr Aleksandrovich Kmito and published by . This book was released on 1967 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Translation written by and published by . This book was released on 1967 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: