Download or read book Low Energy Neutron proton Interactions written by Brian Hollenberg Daub and published by . This book was released on 2012 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: There have been few measurements of cross sections for neutron-proton scattering and radiative capture below 1 MeV. Those measurements which do exist are at a small number of energies and are often inconsistent with theoretical models and with each other. We have conducted several experiments with the goal of obtaining improved data on these cross sections at the University of Kentucky (UKY) and the Los Alamos Neutron Science Center (LANSCE). Feasibility studies for measuring the low energy cross section for np radiative capture have been conducted at both UKY and LANSCE, culminating in a measurement of the cross section at 0.5, 0.9, 1.5, 2.0, and 2.5 MeV at UKY, using a plastic scintillator to detect recoiling deuterons and two BGO scintillators to detect the [gamma]-ray yields at 64.6° and 106.6°. We also performed measurements of the response of BC418 plastic scintillator to low energy protons during these studies, and conducted several additional measurements of the scintillator response at LANSCE and UKY, yielding very precise results from 100 keV to 3.6 MeV. The total cross section for np scattering was measured at UKY from 150 to 800 keV by neutron transmission, measuring the neutron yields in a liquid scintillator with various targets in the beam. The cross section was determined by taking ratios of neutron yields with and without the target, giving cross sections which are independent of detector efficiency and dead time. These results fill a significant gap in the available data below 500 keV.
Download or read book Search for Weak Interactions in Neutron proton Scattering at Low Energy written by Edmund Jeenicke and published by . This book was released on 1976 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Neutron proton Interaction written by Richard S. Christian and published by . This book was released on 1949 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Is There an Ay Problem in Low energy Neutron proton Scattering written by and published by . This book was released on 2008 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: DOI: http://dx.doi.org/10.1016/j.physletb.2008.08.037 We calculate Ay in neutron-proton scattering for the interactions models WJC-1 and WJC-2 in the Covariant Spectator Theory. We find that the recent 12 MeV measurements performed at TUNL are in better agreement with our results than with the Nijmegen Phase Shift Analysis of 1993, and after reviewing the low energy data, conclude that there is no Ay problem in low-energy np scattering.
Download or read book On the Neutron proton Scattering Cross section written by D. Bohm and published by . This book was released on 1946 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutron proton Interactions in Odd Nuclei written by C. H. Kim and published by . This book was released on 1966 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proton Therapy Physics written by Harald Paganetti and published by CRC Press. This book was released on 2016-04-19 with total page 691 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proton Therapy Physics goes beyond current books on proton therapy to provide an in-depth overview of the physics aspects of this radiation therapy modality, eliminating the need to dig through information scattered in the medical physics literature. After tracing the history of proton therapy, the book summarizes the atomic and nuclear physics background necessary for understanding proton interactions with tissue. It describes the physics of proton accelerators, the parameters of clinical proton beams, and the mechanisms to generate a conformal dose distribution in a patient. The text then covers detector systems and measuring techniques for reference dosimetry, outlines basic quality assurance and commissioning guidelines, and gives examples of Monte Carlo simulations in proton therapy. The book moves on to discussions of treatment planning for single- and multiple-field uniform doses, dose calculation concepts and algorithms, and precision and uncertainties for nonmoving and moving targets. It also examines computerized treatment plan optimization, methods for in vivo dose or beam range verification, the safety of patients and operating personnel, and the biological implications of using protons from a physics perspective. The final chapter illustrates the use of risk models for common tissue complications in treatment optimization. Along with exploring quality assurance issues and biological considerations, this practical guide collects the latest clinical studies on the use of protons in treatment planning and radiation monitoring. Suitable for both newcomers in medical physics and more seasoned specialists in radiation oncology, the book helps readers understand the uncertainties and limitations of precisely shaped dose distribution.
Download or read book Radiative Interactions of the Neutron proton System written by Norman Austern and published by . This book was released on 1951 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dibaryon Amplitudes for the Low Energy Neutron Proton Electromagnetic Interaction written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is a collection of detailed calculations that employ dibaryon propagators and vertex operators to obtain various electromagnetic amplitudes in the low-energy np/d[gamma] system.
Download or read book On the Interaction Between Neutrons and Electrons written by Enrico Fermi and published by . This book was released on 1947 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The possible existence of a potential interaction between neutron and electron has been investigated by examining the asymmetry of thermal neutron scattering from xenon. It has been found that the scattering in the center-of-gravity system shows exceedingly little asymmetry. By assuming an interaction of a range equal to the classical electron radius, the depth of the potential well has been found to be 300℗±5000 ev. This result is compared with estimates based on the mesotron theory according to which the depth should be 12000 ev. It is concluded that the interaction is not larger than that expected from the mesotron theory; that, however, no definite contradiction of the mesotron theory can be drawn at present, partly because of the possibility that the experimental error may have been understimated, and partly because of the indefiniteness of the theories which makes the theoretical estimate uncertain.
Download or read book The Range of Tensor Neutron proton Interaction written by Pritam Sen and published by . This book was released on 1942 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low energy Neutron Physics written by Isaj I. Gurevic̆ and published by . This book was released on 1968 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutron Measurements and the Weak Nucleon Nucleon Interaction written by and published by DIANE Publishing. This book was released on with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The p n Reaction and the Nucleon Nucleon Force written by Charles D. Goodman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the "Conference on the (p,n) Reaction and the Nucleon-Nucleon Force" held in Telluride, Colorado, March 29-31, 1979. The idea to hold this conference grew out of a program at the Indiana University Cyclotron Facility to study the (p,n) reaction in the 50-200 MeV energy range. The first new Indiana data, in contrast to low energy data, showed features suggestive of a dominant one pion exchange interaction. It seemed desir able to review what was known about the fre·e and the effective nucleon-nucleon force and the connection between the low and high energy (p,n) data. Thus the conference was born. The following people served as the organizing committee: S. M. Austin, Michigan State University W. Bertozzi, Massachusetts Institute of Technology S. D. Bloom, Lawrence Livermore Laboratory C. C. Foster, Indiana University C. D. Goodman, Oak Ridge National Laboratory (Conference Chairman) D. A. Lind, University of Colorado J. Rapaport, Ohio University G. R. Satch1er, Oak Ridge National Laboratory G. E. Walker, Indiana University R. L. Walter, Duke University and TUNL The sponsoring organizations were: Indiana University, Bloomington, Indiana University of Colorado, Boulder, Colorado Oak Ridge National Laboratory, Oak Ridge, Tennessee Triangle Universities Nuclear Laboratory, Durham, North Carolina Of course, the major credit for the success of the con ference must go to the speakers who diligently prepared their talks that are reproduced in this volume.
Download or read book Analysis of Neutron proton Scattering Data at Low Energies written by George Peter Kyriazis and published by . This book was released on 1965 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutrino Interactions with Electrons and Protons written by A.K. Mann and published by Springer Science & Business Media. This book was released on 1997-05-08 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Market: Researchers and graduate students in high energy physics, physics historians. This book contains 13 papers that reflect the development of neutrino interactions with the electrons and protons in a fixed-target experiment that, beginning in 1980, grew out of the formal collaboration in high energy physics between Japanese and American institutions. These experiments were crucial to the merger of quantum electrodynamics and quantum weak dynamics, the foundation of electroweak theory today.
Download or read book Vibrational Spectroscopy With Neutrons With Applications In Chemistry Biology Materials Science And Catalysis written by Philip C H Mitchell and published by World Scientific. This book was released on 2005-06-15 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inelastic neutron scattering (INS) is a spectroscopic technique in which neutrons are used to probe the dynamics of atoms and molecules in solids and liquids. This book is the first, since the late 1960s, to cover the principles and applications of INS as a vibrational-spectroscopic technique. It provides a hands-on account of the use of INS, concentrating on how neutron vibrational spectroscopy can be employed to obtain chemical information on a range of materials that are of interest to chemists, biologists, materials scientists, surface scientists and catalyst researchers. This is an accessible and comprehensive single-volume primary text and reference source.
