Download or read book A PROPOSAL TO MEASURE THE CROSS SECTION OF THE SPACE STAR IN NEUTRON DEUTERON BREAKUP IN A RECOIL GEOMETRY SETUP written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Nucleon-deuteron (Nd) breakup is an important tool for obtaining a better understanding of three-nucleon (3N) dynamics and for developing meson exchange descriptions of nuclear systems. The kinematics of the nd breakup reaction enable observables to be studied in a variety of exit-channel configurations that show sensitivity to realistic nucleon-nucleon (NN) potential models and three-nucleon force (3NF) models. Rigorous 3N calculations give very good descriptions of most 3N reaction data. However, there are still some serious discrepancies between data and theory. The largest discrepancy observed between theory and data for nd breakup is for the cross section for the space-star configuration. This discrepancy is known as the "Space star Anomaly". Several experimental groups have obtained results consistent with the "Space Star Anomaly", but it is important to note that they all used essentially the same experimental setup and so their experimental results are subject to the same systematic errors. We propose to measure the space-star cross-section at the Triangle Universities Nuclear Laboratory (TUNL) using an experimental technique that is significantly different from the one used in previous breakup experiments. This technique has been used by a research group from the University of Bonn to measure the neutron-neutron scattering length. There are three possible scenarios for the outcome of this work: 1) the new data are consistent with previous measurements; 2) the new data are not in agreement with previous measurements, but are in agreement with theory; and 3) the new data are not in agreement with either theory or previous measurements. Any one of the three scenarios will provide valuable insight on the Space Star Anomaly.
Download or read book Cross section Measurements of Star Configurations in Neutron deuteron Breakup at 16 0 MeV written by Alexander Sheffield Crowell and published by . This book was released on 2001 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Differential Cross Section Measurement for the D n Np Reaction written by Sho Uemura and published by . This book was released on 2010 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The differential cross section for the quasielastic d(n, np) neutron-induced deuteron breakup reaction was measured as a function of incident and scattered particle energies and angles, using a liquid deuterium target at the Weapons Neutron Research (WNR) spallation neutron beam at the Los Alamos Neutron Science Center at the Los Alamos National Laboratory. Cross sections were computed for the incident neutron energy ranges of 10010, 20010, and 30010 MeV. We used proton detectors covering a range of = 17 - 25 in the lab frame, and neutron detectors covering a range of = 55 - 76 in the lab frame. Experiment setup and data analysis are discussed, and preliminary results are presented for the cross section.
Download or read book The Cu63 n 2n Cu62 Cross Section as a Function of Neutron Energy Near the Threshold written by Joseph L. Fowler and published by . This book was released on 1949 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Target Correlation Effects on Neutron nucleus Total Absorption and Abrasion Cross Sections written by Francis A. Cucinotta and published by . This book was released on 1991 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Differential Cross Section for the Neutron induced Deuteron Breakup Reaction at at En written by Henry Rossignol Setze and published by . This book was released on 1994 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of Neutron Cross Sections and Polarizations Using the Associated Particle Method written by Roger Louis Hagengruber and published by . This book was released on 1972 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of the cross section for the reaction d d p written by J. H. Coon and published by . This book was released on 1946* with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nucleon Nucleus Interaction Data Base written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-09 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutron total cross sections are represented for Li to Pu targets at energies above 0.1 MeV and less than 100 MeV using a modified nuclear Ramsauer formalism. The formalism is derived for energies above 100 MeV by fitting theoretical cross sections. Neutron absorption cross sections are represented by analytic expressions of similar form, but shape resonance phenomena of the Ramsauer effect is not present. Elastic differential cross sections are given as a renormalized impulse approximation. These cross section data bases are useful for nucleon transport applications. Wilson, J. W. and Townsend, L. W. and Buck, W. W. and Chun, S. Y. and Hong, B. S. and Lamkin, S. L. Langley Research Center RTOP 199-22-76-01...
Download or read book Measurement of the Breakup Cross Section of the D d n Reaction at 6 94 MeV for the Active Interrogation of Hidden Fissile Materials written by Andrea L. Richard and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calculations of Nucleon deuteron Breakup Cross Sections and Polarizations Quantities at 22 7 MeV written by Jan Bruinsma and published by . This book was released on 1976 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutron cross sections for reactor dosimetry proceedings of a Consultants meeting on integral cross section measurements in standard neutron fields for reactor dosimetry held in Vienna 15 19 November 1976 1 Review papers written by Wien Consultants’ Meeting on Integral Cross-Section Measurements in Standard Neutron Fields for Reactor Dosimetry 1976 and published by . This book was released on 1978 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scattering Length Measurements from Radiative Pion Capture and Neutron deuteron Breakup written by and published by . This book was released on 1997 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The neutron-neutron and neutron-proton 1S0 scattering lengths a{sub nn} and a{sub np}, respectively, were determined simultaneously from the neutron-deuteron breakup reaction. Their comparison with the recommended values obtained from two body reactions gives a measure of the importance of three-nucleon force effects in the three-nucleon continuum. In order to check on the result obtained for a{sub nn} from the two-body [pi]−-d capture reaction, a new measurement was performed at LANL. Preliminary results of the three experiments are given.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1990 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 14 MeV Neutrons written by Vladivoj Valkovic and published by CRC Press. This book was released on 2015-08-25 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the often difficult and time-consuming effort of performing experiments with fast (14 MeV) neutrons, these neutrons can offer special insight into nucleus and other materials because of the absence of charge. 14 MeV Neutrons: Physics and Applications explores fast neutrons in basic science and applications to problems in medicine, the envir
Download or read book Physics Division Annual Report written by Argonne National Laboratory. Physics Division and published by . This book was released on 2001 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radiation Shielding written by J. Kenneth Shultis and published by Amer Nuclear Society. This book was released on 2000-01-01 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: This newly published book is intended for dual use as a textbook for students in radiation shielding courses and a reference work for shielding practitioners. It emphasizes the principles behind techniques used in various aspects of shield analysis and presents these principles in many different contexts. This approach is intended to provide a strong base of understanding in order to facilitate use of the large shielding codes that have come to dominate shielding design and analysis. An assumption is made that the reader has an understanding of mathematics through basic calculus and vector analysis as well as a knowledge of the nuclear physics of radioactive decay. For most chapters, problem sets are provided.
