Download or read book Space Astronomy Infrared Detector Development Program written by and published by . This book was released on 1981 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Space Science Applications Notice written by and published by . This book was released on 1981-12 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Long Wave Infrared Detectors for Space Astronomy written by Candice Marie Bacon and published by . This book was released on 2006 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis details the research and development of 10mum cutoff detector arrays conducted at the University of Rochester in conjunction with Rockwell Scientific. Through my data analysis and theoretical modeling of detector characteristics, processes which prevent the detector arrays from meeting low background astronomical specifications are determined and fed back to the manufacturer. The first set of deliveries were manufactured in a banded format with multiple diode structures. Data analysis indicated that the smallest capacitance diode structure exhibited the lowest dark currents and the highest yield of pixels (28%) meeting the goal of less than 100e -/s dark current with adequate (> 45mV) well depth. The mechanisms limiting dark current were found to be surface current at lower biases and tunneling (trap-to-band and band-to-band) at higher biases. In order to reduce stress at the junction during hybridization (a leading cause of the observed tunneling current), a proprietary bonding method was developed by Rockwell Scientific. New detector arrays, manufactured with the optimum diode structure and bonded with the new bonding technique to the HAWAII-1RG multiplexer, showed an impressive 75% of pixels exhibiting dark current less than 30e -/s with sufficient (> 40mV) well depth. Most of these pixels exhibited extremely low dark currents, less than 0.3e -/s. I found that the dark current limiting mechanism at lower biases was still surface current on the front-side, caused by passivation processing techniques. The limiting mechanism at high biases was dislocation-induced early breakdown which took the shape of a screw dislocation (or micropipe) on an I-V curve of dark current, manifesting as a sharp increase in trap-to-band tunneling current. Burst noise was also detected in the source follower unit cell FET of the multiplexer and was fully characterized and explored. It was discovered that the burst noise was a result of oxide trapping of a single charge for most of the observed two-level characteristics. Other, more complicated forms exhibited by some pixels suggested that some multi-carrier traps exist in the bulk silicon close to the channel. With the results presented in this thesis, Rockwell Scientific will again improve their processing and manufacturing techniques on both detectors and multiplexers.
Download or read book Development of Infrared Detectors for Space Astronomy written by Jian Wu and published by . This book was released on 1997 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Short Wavelength Infrared Array Detectors for Space Astronomy Application written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-17 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Smithsonian Astrophysical Observatory (SAO) and its team - the University of Arizona (UA), the University of Rochester (UR), Santa Barbara Research Center (SBRC), Ames Research Center (ARC), and Goddard Space Flight Center (GSFC) - are carrying out a research program with the goal of developing and optimizing infrared arrays in the 2-27 micron range for space infrared astronomy. This report summarizes research results for the entire grant period 1 January 1992 through 30 June 1996. Fazio, Giovanni G. Unspecified Center NASA-CR-205090, NAS 1.26:205090 NAGw-2868...
Download or read book A Long range Program in Space Astronomy written by United States. Astronomy Missions Board and published by . This book was released on 1969 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Potential for advancement of astronomy by space programs.
Download or read book A Scientific Program for Infrared Submillimeter and Radio Astronomy from Space written by and published by . This book was released on 1989 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Infrared Detection Techniques for Space Research written by V. Manno and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrared Astronomy is a relatively new subject but it has already radically altered our ideas about astronomical sources. Recent progress in this subject is the result of improved detection techniques, particularly the use of detectors at liquid helium temperatures. Unfortunately, the terrestrial atmosphere greatly restricts Infrared astronomers by allowing them to detect radiation only in narrow transmission win dows and by presenting a foreground emission which limits the faintness of observable sources. It is only from aircraft or balloon altitudes that we can begin to observe faint sources over the complete range of wavelengths between the visible and the radio regions. Few such observations have yet been made and none from satellites, although the latter vehicle will offer complete freedom from atmospheric effects. New developments and intermediate steps will be required before the ultimate aim of flying in space can be achieved. It is not surprising therefore that the Fifth Eslab/Esrin Symposium should deal with this problem. This book contains the proceedings of the Symposium and faithfully records all discussions. The Symposium covered the present situation and future perspectives of IR techniques. International leaders in the field reviewed the results to date and the possible developments in telescope systems, detectors, cryogenics, filters, and interferometers. Individual con tributions were made by European and U. S. scientists in each of these fields.
Download or read book A Long range Program in Space Astronomy Position Paper of the Astronomy Missions Board written by Robert O. Doyle and published by . This book was released on 1969 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detector Arrays for Low background Space Infrared Astronomy written by and published by . This book was released on 1986 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Infrared and Submillimeter Space Missions in the Coming Decade written by Harley Thronson and published by Springer. This book was released on 1996 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: A revolution similar to that brought by CCDs to visible astronomy is still ahead in IR and submillimeter astronomy. There is certainly no wavelength range which has, over the past several years, seen such impressive advances in technology: large-scale detector arrays, new designs for cooling in space, lightweight mirror technologies. Scientific cases for observing the cold universe are outstanding. Observations in the FIR/Submm range will provide answers to such fundamental questions as: What is the spectrum of the primordial fluctuations? How do primeval galaxies look? What are the first stages of star formation? Most of the international space missions that have been triggered by these questions are presented in detail here. Technological issues raised by these missions are reviewed, as are the most recent achievements in cooling and detector technologies.
Download or read book Next Generation Infrared Space Observatory written by S.J. Bell Burnell and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrared astronomy has undergone an enormous revolution during the last decade. Despite the great technical difficulties of building detectors in a cryogenic environment, the scientific advances in infrared astronomy have been astounding. In the near future many more advances can be expected from still newer developments in telescope and detector designs. High quality detector arrays and passively cooled telescopes are very promising techniques for achieving considerably larger apertures. This volume contains the refereed papers from the workshop on 'Next Generation Infrared Observatory', dealing with all new aspects of future infrared telescopes.
Download or read book Development of 256 X 256 Element Impurity Band Conduction Infrared Detector Arrays for Astronomy written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-02 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the work performed on a one and a half year advance technology program to develop Impurity Band Conduction (IBC) detectors with very low dark current, high quantum efficiency, and with good repeatable processes. The program fabricated several epitaxial growths of Si: As detecting layers from 15 to 35 microns thick and analyzed the performance versus the thickness and the Arsenic concentration of these epitaxial layers. Some of the epitaxial runs did not yield because of excessive residual impurities. The thicker epitaxial layers and the ones with higher Arsenic concentration resulted in good detectors with low dark currents and good quantum efficiency. The program hybridized six detector die from the best detector wafers to a low noise, 256 x 256 readout array and delivered the hybrids to NASA Ames for a more detailed study of the performance of the detectors. Domingo, George Ames Research Center NAS2-14321..
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 Space Astronomy written by COSPAR. Plenary Meeting and published by Elsevier Science & Technology. This book was released on 1993 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers presented in this volume are taken from several meetings held during the World Space Congress. They include papers on X-ray and EUV astronomy research and results from recent space missions. A section on infrared and submillimeter astronomy also forms part of this volume.
Download or read book Infrared Detectors and Instrumentation for Astronomy written by Albert M. Fowler and published by . This book was released on 1995 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Millimeter Submillimeter and Far infrared Detectors and Instrumentation for Astronomy VII written by and published by . This book was released on 2014 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
