Download or read book Development of a High intensity Solid state Gamma ray Dosimeter System written by C. L. Fletcher and published by . This book was released on 1966 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design, construction, and testing of an integrating gamma-ray dosimeter for high dose rates are discussed. The sensor is a silicon surface-barrier detector operating as a current device. The detector output current is integrated on a capacitor. When the voltage on the capacitor rises to a predetermined level corresponding to 10 rad-equivalent-air of gamma-ray dose, the capacitor is discharged and the instrument produces an output pulse to signal the event. The number of output pulses indicates integrated dose, and the pulse repetition rate indicates dose rate. The detector proper is cooled with a thermoelectric cooler to minimize and stabilize leakage current. The instrument is designed for operation in the dose-rate range of 10 to 100,000 rad-equivalent-air per second. The detector is constructed to make it function as a Bragg-Gray device over the gamma-ray energy range of 80 kev to 12 Mev. The detector is reasonably isotropic; cumulative errors due to all causes are less than plus or minus 30%. The electronics are insensitive to gamma-radiation transients for dose rates as high as 1,000,000 rad per second. Results of tests with radioactive sources, a fast-burst reactor, and bremsstrahlung pulses are given. (Author).

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fast Transient High intensity Gamma ray Solid State Detectors written by William F. Lindsay and published by . This book was released on 1961 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High intensity Radiation Dosimetry with SEMIRAD written by Stanley Kronenberg and published by . This book was released on 1966 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solid state Dosimetry written by Zdeněk Spurný and published by . This book was released on 1967 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-06 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1966 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Dosimetric Study of High Intensity Gamma Ray Sources written by Walter Rosenzweig and published by . This book was released on 1952 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development and Characterization of a Solid State Detector Array for a Large Scale Gamma ray Imaging System written by Bamdad Bastani and published by . This book was released on 1980 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book HIGH INTENSITY RADIATION DOSIMETRY WITH SEMIRAD SECONDARY ELECTRON MIXED RADIATION DOSIMETERS written by and published by . This book was released on 1966 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Principles of SEMIRAD radiation detectors; SEMIRAD vacuum considerations; SEMIRAD dose-rate limitations; SEMIRAD sensitivity; SEMIRAD energy dependence; Emission of secondary electrons by high-energy particles; SEMIRAD pulse amplification and cable connection; Calibration of SEMIRAD; Instruments with wide sensitivity range; Measurement of fast-neutron fluxes in an environment of fast neutrons and gamma rays; Construction of SEMIRAD diodes and diode-type dosimeters; Pulsed radiation rate measurements with SEMIRAD.

Download or read book U S Government Research Development Reports written by and published by . This book was released on 1966-11 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of References on Nuclear Energy written by International Atomic Energy Agency and published by . This book was released on 1967 with total page 1878 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Intensity Gamma Ray Dosimetry written by D. Hale and published by . This book was released on 1960 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: In addition to the gamma ray highintensity dosimetry systems discussed in Nucleonics in October, 1959, several special systems have been utilized by this laboratory in studying radiation effects on materials. A few of these systems are discussed below in the belief that they offer certain advantages in cost or performance and may be of interest to other workers in the field. Since almost any material that exhibits a measureable and reproducible change in physical or chemical properties can be used as a dosimeter, the usefulness of such systems depends on a thorough knowledge of these changes. The foremost requirement, that property changes be accurately measureable, limits their usefulness to limited regions of integrated dose. The requirements for approximating the energy sensitivity, volume, and density of the test materials must also be considered when the energy spectra of the source is unknown or when self-absorption characteristics of the material sample are believed significant. In addition to using dosimetry that approximates the test materials in effective atomic number and sample self-absorption characteristics, more standard techniques such as graphite ion chambers and ferrous-ferric chemical dosimeters are used for comparison with other facility results when possible. At high dose rates or high total dose applications only a few satisfactory systems are available. The use of more than one system is of value for reliability as well as for diagnosis of dose rate and energy sensitivity effects which may influence results obtained with the test material. Integrated dose systems generally involve measurement of some chemical change in a material and are most useful in performing two functions. The first is as a monitor of the total radiation received. This is particularly valuable in sources having a rapidly changing dose rate, especially when the dosimeter system is chosen to have a spectral response similar to the test specimen. The other function is as an absolute calibration of dose or dose rate.

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Atomic Energy Research written by U.S. Atomic Energy Commission and published by . This book was released on 1961 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: