TITLE

Differential cross section for neutron-proton bremsstrahlung

AUTHOR(S)
Matthews, J. L.; Safkan, Y.
PUB. DATE
July 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 529 Issue 1, p594
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The neutron-proton bremsstrahlung process (np→npγ) provides a unique and sensitive probe of meson exchange currents in the nucleon-nucleon interaction. The differential cross section for this process is being measured at LANSCE. A liquid hydrogen target is exposed to the intense, pulsed neutron beam from the WNR facility, and the scattered neutrons and recoil protons are observed in coincidence at angles between 20° and 36° on opposite sides of the beam. Measurement of the neutron and proton energies allows full kinematic reconstruction of each event. The resulting angular distributions of the bremsstrahlung photons will be compared with the predictions of a theoretical calculation. © 2000 American Institute of Physics.
ACCESSION #
6029959

 

Related Articles

  • Mass-Surface Predictions near the Doubly Magic Nuclide [sup 78]Ni. Isakov, V. I.; Mezilev, K. A.; Novikov, Yu. N.; Erokhina, K. I.; Fogelberg, B.; Mach, H. // Physics of Atomic Nuclei;Oct2000, Vol. 63 Issue 10, p1740 

    The mass surface of nuclei close to the doubly magic nuclide [sup 78]Ni is calculated by two methods. The first relies on the multiparticle shell model based on an effective interaction and a mean nuclear potential. The second employs the concept of so-called "magic crosses" and enables us to...

  • Staggering behavior of isovector 0+ state energies in even-even and odd-odd nuclei classified according to even representations of sp(4). Sviratcheva, K. D.; Georgieva, A. I.; Draayer, J. P. // AIP Conference Proceedings;2002, Vol. 638 Issue 1, p263 

    A discrete derivative analysis of the energies of the lowest isovector-paired 0[SUP+] state of even-even and odd-odd nuclei is presented within a classification scheme provided by even representations of a fermion realization of sp(4). The results suggest that the observed energy staggering...

  • Characterization of p-n junctions and surface-states on silicon devices by photoemission electron microscopy. Giesen, M.; Phaneuf, R.J.; Williams, E.D.; Einstein, T.L.; Ibach, H. // Applied Physics A: Materials Science & Processing; 

    We have investigated p-n junctions on a silicon device fabricated on a (100) surface using photoemission electron microscopy (PEEM). We show that different doping levels for the p-and n-doped regions in the surface give rise to a contrast in the PEEM images. The contrast is due to the change in...

  • Pion production and entropy experiments at storage rings. Jakobsson, B. // AIP Conference Proceedings;2000, Vol. 512 Issue 1, p49 

    The perspective for future experiments with large detector systems at storage rings, operating in slow ramping mode, is discussed. Data from slow ramping proton-nucleus and heavy ion collision experiments with more modest detector systems, on entropy estimation and charged pion emission from the...

  • Antikaon Production and Medium Effects in Proton—Nucleus Reactions at Subthreshold Beam Energies. Paryev, E. Ya. // Physics of Atomic Nuclei;Nov2001, Vol. 64 Issue 11, p1931 

    Inclusive K[sup -]meson production in proton-nucleus collisions in the subthreshold-energy regime is analyzed within an appropriate folding model for incoherent primary proton-nucleon and secondary pion-nucleon production processes, which takes properly into account the struck-target-nucleon...

  • Gravitational radiation from a rotating protoneutron star. Sazhin, M. V.; Ustyugov, S. D.; Chechetkin, V. M. // Journal of Experimental & Theoretical Physics;Apr98, Vol. 86 Issue 4, p629 

    This paper discusses the gravitational radiation that accompanies the formation of a rotating protoneutron star. Mainly large-scale entropy inhomogeneities develope inside the star. As a result, bubbles of hot nuclear substance are formed, and convective motions arise: bubbles of hot neutron...

  • Production Rates for Ï€[sup +]K[sup —],pK[sup —], and pÏ€[sup —] Atoms in Inclusive Processes. Gorchakov, O. E.; Kuptsov, A. V.; Nemenov, L. L.; Riabkov, D. Yu. // Physics of Atomic Nuclei;Oct2000, Vol. 63 Issue 10, p1847 

    The yields of π[sup +]K[sup -], pK[sup -], and pπ[sup -] atoms in the reaction p +Al → atom + X at energies of 24, 70, 450 GeV and emission angles of θ[sub lab] = 1º-6º are calculated from inclusive-production cross sections for p, π[sup +], π[sup -], and K[sup...

  • Possibility to deduce the emission time sequence of neutrons and protons from the neutron-proton correlation function. Ghetti, R.; Helgesson, J.; Colonna, N.; Jakobsson, B. // AIP Conference Proceedings;2002, Vol. 610 Issue 1, p693 

    Experimental information has been derived from the neutron-proton correlation function in order to deduce the time sequence of neutrons and protons emitted at 45° in the E/A=45 MeV [sup 58]Ni+[sup 27]Al reaction. © 2002 American Institute of Physics.

  • M1 transitions in the SU(3) shell model. Popa, G.; Hirsch, J. G.; Draayer, J. P.; Bahri, C. // AIP Conference Proceedings;2002, Vol. 638 Issue 1, p253 

    M1 transitions in isotopes of Gd and Dy are calculated within the framework of the pseudo-SU(3) model. Basis states are built as linear combinations of direct product SU(3) proton and neutron configurations coupled to total pseudo-spin zero. The system Hamiltonian includes spherical Nilsson...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics