Download or read book Pulsed Neutron Experiments in Graphite written by H. F. McFarlane and published by . This book was released on 1971 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed pulsed neutron measurements have been performed in graphite assemblies ranging in size from 30.48 cm x 38.10 cm x 38.10 cm to 91.44 cm x 66.67 cm x 66.67 cm. Results of the measurement have been compared to a modeled theoretical computation. In the first set of experiments, we measured the effective decay constant of the neutron population in ten graphite stacks as a function of time after the source burst. We found the decay to be non-exponential in the six smallest assemblies, while in three larger assemblies the decay was exponential over a significant portion of the total measuring interval. The decay in the largest stack was exponential over the entire ten millisecond measuring interval. The non-exponential decay mode occurred when the effective decay constant exceeded 1600 sec^( -1). In a second set of experiments, we measured the spatial dependence of the neutron population in four graphite stacks as a function of time after the source pulse. By doing an harmonic analysis of the spatial shape of the neutron distribution, we were able to compute the effective decay constants of the first two spatial modes. In addition, we were able to compute the time dependent effective wave number of neutron distribution in the stacks. Finally, we used a Laplace transform technique and a simple modeled scattering kernel to solve a diffusion equation for the time and energy dependence of the neutron distribution in the graphite stacks. Comparison of these theoretical results with the results of the first set of experiments indicated that more exact theoretical analysis would be required to adequately describe the experiments. The implications of our experimental results for the theory of pulsed neutron experiments in polycrystalline media are discussed in the last chapter.

Download or read book Pulsed Neutron Source Studies of Graphite enriched Uranium Systems written by Fred A. Kloverstrom and published by . This book was released on 1959 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Determination of the Diffusion Parameters of Graphite by the Pulsed Neutron Source Method written by Ronald David Doctor and published by . This book was released on 1964 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neutron Noise Waves and Pulse Propagation written by and published by . This book was released on 1967 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pulsed Neutron Measurements in Graphite written by and published by . This book was released on 1966 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Experimental and Theoretical Study of the Interaction of Neutrons with Matter Using a Pulsed Neutron Source written by Guy von Dardel and published by . This book was released on 1953 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Slowing Down Distribution of Sb124 Be Photo Neutrons in Graphite and of the Use of Indium Foils written by L. D. Roberts and published by . This book was released on 1950 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Neutron Thermalization and Diffusion in Graphite by the Pulsed Neutron Technique written by Thomas R. Henry and published by . This book was released on 1965 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Diffusion of Thermal Neutrons in Heterogeneous Graphite cadmium Assemblies by the Pulsed Neutron Source Technique written by Jacobus G. Mohr and published by . This book was released on 1966 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pulsed Neutron Research written by and published by . This book was released on 1965 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pulsed Neutron Research written by and published by . This book was released on 1965 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neutron Age Measurements in Graphite with Gold Resonance Detection written by W. L. Carlson and published by . This book was released on 1950 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Current Status of Neutron Scattering Research and Facilities in the United States written by National Research Council and published by National Academies Press. This book was released on 1984-02-01 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pulsed Neutron Measurements in Graphite written by Pekka Jauho and published by . This book was released on 1966 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neutron Physics written by Karl-Heinrich Beckurts and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based upon a series of lectures I have occasionally given at the University of Gottingen since 1951. They were meant to introduce the students of experimental physics to the work in a neutron physics laboratory dealing with the problem of measuring neutron flux, diffusion length, Fermi age, effective neutron temperature, absorption cross sections and similar problems. Moreover, these lectures were intended to prepare the students for a subsequent lecture covering the physics of nuclear reactors. The original character of this series of lectures has been retained in the book. It is intended for use by students as well as anyone desiring to work on neutron physics measurements. The first half mainly covers the theory of neutron fields, i. e. essentially diffusion and slowing down theory. The second half is largely concerned with measurements in neutron fields. The appendix contains information and data which, in our experience, are frequently required in a neutron laboratory. The field of nuclear physics proper is briefly touched upon in the first two chapters, but only to the extent necessary for the understanding of the following chapters. The multitude of applications of neutron radiation has not been covered. The conclusion of this manuscript coincided with the end of my long period of activity with the Max-Planck-Institut fur Physik at Gottingen. To Professor HEISENBERG lowe thanks for his advice and suggestions for many of the subjects treated here.

Download or read book Analysis of the Time Decay of a Pulsed Neutron Distribution in the University of Michigan Sigma Pile written by Stephen L. Derby and published by . This book was released on 1968 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Neutron Thermalisation written by Peter A. Egelstaff and published by Pergamon. This book was released on 1969 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: