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Book Ground Roughness Effects on the Energy and Angular Distribution of Gamma Radiation from Fallout

Download or read book Ground Roughness Effects on the Energy and Angular Distribution of Gamma Radiation from Fallout written by C. M. Huddleston and published by . This book was released on 1962 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of ground roughness on the radiation field above ground that has been contaminated with fallout from the explosion of a nuclear device was investigated on three types of Nevada terrain: (1) a flat dry-lake bed, (2) semirough terrain or land that has a known and controlled degree of roughness, and (3) typical wild desert. A modified Navy 5-ton six-wheel-drive truck was used as a mobile laboratory. A collimator and a scintillation crystal with a 512 channel analyzer were used to measure gamma-ray spectra at various polar angles. Dose-vs.-height measurements were also made up to a height of 40 ft. The project was undertaken to determine the importance of ground roughness as a factor in radiation shielding.

Book Ground Roughness Calculations for Fallout Gamma Rays

Download or read book Ground Roughness Calculations for Fallout Gamma Rays written by R. L. French and published by . This book was released on 1966 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was made of four models for calculating the effect of ground roughness on the gamma-ray energy and angular distribution in air above a fallout field. One model, called the 'buried-source model', assumes that a uniform thin layer of soil covers the fallout with the thickness of the layer corresponding to the degree of ground roughness. Another, called the 'mixed-source model', assumes that the fallout is mixed with a thin layer of soil. A third model, called the 'collimated-source model', assumes that the fallout is deposited on a smooth ground surface but that the gamma-ray emission is constrained to certain angular sectors. The last model, called the 'furrowed-surface model', assumes that the fallout is distributed over a ground surface which has uniform concentric circular furrows. Calculations of the energy and angular distributions of the uncollided and the singly scattered fluxes three feet above sources with one or more energies were performed using each of the models. Comparisons with measured data and consideration of the convenience of application indicate that the buried- and mixed-source models are preferable to the other two. The results indicate that the magnitude and the angular distribution of the uncollided flux is strongly influenced by ground roughness. The singly scattered flux, which can actually be increased by ground roughness, is much less sensitive to ground roughness than is the uncollided flux. (Author).

Book Ground Roughness Effects in Fallout Radiation Fields Problems of Analysis of Measurements

Download or read book Ground Roughness Effects in Fallout Radiation Fields Problems of Analysis of Measurements written by R. L. Mather and published by . This book was released on 1968 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 'ground roughness' effects on the gamma radiation field from fallout are calculated and described on the basis of the uniform burial model. The dose rate vs. height curves are estimated with an empirical function for the buildup factor. Graphs showing the effect of finite angular resolution of the measuring instrument and the observation of the angular distribution are presented. The emphasis of the discussion is on an improved understanding of the meaning of 'ground roughness' and of the errors common in the measurement of that quantity. Methods of presentation and analysis of experimental data are discussed. (Author).

Book Energy and Angular Distribution of Neutrons and Gamma Rays

Download or read book Energy and Angular Distribution of Neutrons and Gamma Rays written by J. H. Thorngate and published by . This book was released on 1969 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Where possible, these data have been compared with data from previous field experiments. In every case, they were compared with calculations which approximated the experiment. Agreement in both cases is generally good, and this strengthens confidence in calculated results.

Book Structure Shielding Against Fallout Gamma Rays from Nuclear Detonations

Download or read book Structure Shielding Against Fallout Gamma Rays from Nuclear Detonations written by Lewis Van Clief Spencer and published by . This book was released on 1980 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Nuclear Science Abstracts

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1969-05 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Scientific and Technical Aerospace Reports

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1966 with total page 1492 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Sources Fields Measurements and Applications

Download or read book Sources Fields Measurements and Applications written by Frank H. Attix and published by Academic Press. This book was released on 2013-10-22 with total page 965 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiation Dosimetry, Second Edition, VOLUME III: Sources, Fields, Measurements, and Applications covers the significant aspects of radiation dosimetry. The book discusses dosimetry relating to x rays and teleisotope gamma rays, discrete and distributed alpha-, beta-, and gamma-ray sources, electron beams, and heavy charged particle beams. The text also describes dosimetry relating to reactors, neutron and mixed n-gamma fields, neutrons from accelerators and radioactive sources, initial and residual ionizing radiation from nuclear weapons, natural and man-made background radiation, radiation in space, ultra-high energy radiation, and uncommon types of particles. Dosimetry relating to health physics, diobiology, radiotherapy, implant and intracavitary therapy, ""transition-zones"" (especially at bone-tissue interfaces), and radiation processing is also considered. Physicists, biophysicists, and people involved in radiological science will find the book invaluable.

Book TID

Download or read book TID written by and published by . This book was released on 1964 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Experimental Radiation Measurements in Conventional Structures Comparison of measurements in above ground and below ground structures from simulated and actual fallout radiation

Download or read book Experimental Radiation Measurements in Conventional Structures Comparison of measurements in above ground and below ground structures from simulated and actual fallout radiation written by Zolin G. Burson and published by . This book was released on 1964 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Reports Received by Division of Technical Information Extension

Download or read book Reports Received by Division of Technical Information Extension written by U.S. Atomic Energy Commission. Division of Technical Information and published by . This book was released on with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Technical Abstract Bulletin

Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1967 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: