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.
Download or read book Energy and Angular Distribution of Neutrons and Gamma Rays written by John A. Auxier and published by . This book was released on 1967 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to understand better the transmission and scattering of radiation in air, a series of measurements were made to determine the energy and angular distributions at large distances from the Oak Ridge National Laboratory Health Physics Research Reactor and an 800-curie]60 Co source. Both sources were positioned at various elevations on a 1527-ft tower while data were acquired by detectors located in collimators at either 750 or 1000 yd from the base of the tower. Good measurements were obtained of neutron and gamma-ray doses from the HPRR and gamma doses from the ]60Co source as a function of angle of incidence. Scintillation spectra of the gamma rays from the ]60Co source were also obtained. No useful spectrum information was obtained from the HPRR.
Download or read book Energy and Angular Distribution of Neutrons and Gamma Rays Operation BREN written by and published by . This book was released on 1967 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to understand better the transmission and scattering of radiation in air, a series of measurements were made to determine the energy and angular distributions at large distances from the Oak Ridge National Laboratory Health Physics Research Reactor and an 800-curie Co(60) source. Both sources were positioned at various elevations on a 1527-ft tower while data were acquired by detectors located in collimators at either 750 or 1000 yd from the base of the tower. Good measurements were obtained of neutron and gamma-ray doses from the HPRR and gamma doses from the Co(60) source as a function of angle of incidence. Scintillation spectra of the gamma rays from the Co(60) source were also obtained. No useful spectrum information was obtained from the HPRR.
Download or read book The Transmission of Neutrons and Gamma rays Through Air Slots The angular distribution of the neutrons emerging from an air slot written by Robert D. Schamberger and published by . This book was released on 1954 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Angular Distribution of N d Scattering for 2 5 Mev Neutrons written by J. H. Coon and published by . This book was released on 1946 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy and Angular Distribution of Neutrons and Gamma Rays Operation HENRE written by and published by . This book was released on 1969 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The HENRE experiment, conducted at the Nevada Test Site in the winter and summer of 1967, was an extension of the experimental programs related to the Ichiban program to determine the doses received by the survivors at Hiroshima and Nagasaki. This report presents the data obtained on the neutron and gamma-ray dose as a function of polar angle, the fast neutron spectrum as a function of distance, and the high energy gamma-ray spectrum as a function of polar angle. It was found that the neutron spectrum did not reach equilibrium within the distances at which measurements were made. This has an effect on the dose as a function of polar angle measured with different air densities. In addition, the measurements show the gamma-ray dose received from angles below the air-ground interface is affected by the diffuse source of gamma rays. 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.
Download or read book The Attenuation of Gamma Rays and Neutrons in Reactor Shields written by Herbert Goldstein and published by . This book was released on 1957 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutrons from alpha N Sources written by Wilmot N. Hess and published by . This book was released on 1957 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atlas of Energy angular Distributions of Gamma Rays Produced in Neutron Reactions written by A. I. Blokhin and published by . This book was released on 1996 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Angular Distribution of Gamma rays from Inelastic Neutron Scattering Near Threshold written by Lee Walter Torop and published by . This book was released on 1967 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AN INVESTIGATION OF THE ANGULAR DISTRIBUTION OF NEUTRONS FROM THE PHOTO DISINTEGRATION OF THE DEUTERON written by FRANK GENEVESE and published by . This book was released on 1949 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutrons and Related Gamma Ray Problems Neutronen und Verwandte Gammastrahlprobleme written by Edoardo Amaldi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt: 661 tures, such as occurs in stellar atmospheres and in thermonuc1ear processes, will not be considered 1. Because photoelectric absorption predominates completely at low photon energies, and penetration theory is elementary under these conditions, attention is directed in this artic1e to photon energies above ""20 kev. On the high energy side, this artic1e does not cover the cascade shower processes which are dealt 2 with in cosmic ray studies • In this connection it is recalled that the cascade shower process, which involves electrons and positrons besides X rays, becomes predominant above 10 Mev in heavy elements, and above 100 Mev in light ones. Theories developed for the study of cascade showers in cosmic rays rely on assumptions about the prob ability of interactions with matter which are adequate only at energies of the order of 1 Gev or more. Below this energy there is a gap in which penetration phenomena are qualitatively known and understood but have not yet been calculated in detail. A few detailed experimental studies which have been made at energies up to 300 Mev will be reviewed in this article.
Download or read book Fission Neutrons written by Nikolay Kornilov and published by Springer. This book was released on 2014-07-25 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the fission of heavy nuclei was discovered over 75 years ago, many problems and questions still remain to be addressed and answered. The reader will be presented with an old, but persistent problem of this field: The contradiction between Prompt Fission Neutron (PFN) spectra measured with differential (microscopic) experiments and integral (macroscopic and benchmark) experiments (the Micro-Macro problem). The difference in average energy is rather small ~3% but it is stable and we cannot explain the difference due to experimental uncertainties. Can we measure the PFN spectrum with high accuracy? How may we compare results of different experiments to provide better accuracy? Are our traditional theoretical models correct? What can be done to solve the Micro-Macro problem in future? These questions are discussed in this monograph for the reader. The current work will be of interest to graduate students and researchers, particularly those working in nuclear and neutron physics.
Download or read book Bibliography of Published Literature on the Preparation and Properties of Radioactive Neutron Sources written by U.S. Atomic Energy Commission and published by . This book was released on 1950 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Angular Distribution of Gamma Rays Resulting from Neutron Capture in Air written by R. E. BEISSNER and published by . This book was released on 1961 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analytic procedure is presented for calculating the angular distribution of gamma rays resulting from neutron capture in air. Numerical results are tabulated for four source-detector separation distances, eight angles of emission at the source, and fifteen initial neutron-energy groups. Agreement with Monte Carlo calculations is within the estimated accuracy of the Monte Carlo data. (Author).
Download or read book Neutron Capture Gamma Ray Spectroscopy written by R. E. Chrien and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 875 pages. Available in PDF, EPUB and Kindle. Book excerpt: The post World War II era witnessed a tremendous growth in the research carried out in neutron-induced reactions and especially in neutron capture y-ray studies. This growth was stimulated by the availability of neutron sources, such as reactors and accelerators, and by the development of high resolution y-ray and conversion electron detectors. Today the combination of high flux reactors and precise instrumentation has produced spectral data of exceptional quality, as the pages of these proceedings illustrate. The world-wide community of the practioners of the art of cap ture y-ray spectroscopy has met three times in the last decade: the first international symposium on this subject was held at Studsvik, Sweden in 1969, and the second at Petten, The Netherlands in 1974. A smaller meeting, of mostly u. S. and some European parti cipation, was held at Argonne National Laboratory in 1966. A perusal of the proceedings of these meetings shows the striking ad vances in this now mature field of physics over the last dozen years. Each meeting has seen a small but perceptible increase in the number of papers presented and the number of laboratories repre sented. More importantly, each meeting has documented the increasing impact of (n,y) reasearch, not only on other areas of basic physics, but also on commercial and medical applications of this technology. A total of 29 invited papers and 97 contributed papers were presented at this symposium.
Download or read book Experimental neutron resonance spectroscopy written by J Harvey and published by Elsevier. This book was released on 2012-12-02 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental Neutron Resonance Spectroscopy deals with the experimental technique of neutron resonance spectroscopy. Pulsed accelerator time-of-flight spectrometers and gamma rays from neutron capture in resonances are discussed. Total neutron cross section measurements are presented, along with neutron scattering and capture cross-section measurements and measurements on fissile nuclides. This book is comprised of five chapters and begins with an introduction to pulsed accelerator time-of-flight spectrometers with moderated continued neutron spectra, together with the pulsed Van De Graaff. Experimental techniques used for neutron cross section measurements, including detectors and data acquisition equipment, are then outlined. Scattering measurements and capture measurements as well as gamma-ray spectra from the capture of neutrons in resonances are considered. The final chapter focuses on the detailed and varied experiments that have been performed on the complicated fission process, together with the parameters of the resonances of the fissile nuclides. This monograph will be a useful resource for spectroscopists and physicists.
