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Coherent Pi0 Photoproduction On Nuclei
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Book Synopsis Coherent Pi0 Photoproduction on Nuclei by : Claire M. Tarbert
Download or read book Coherent Pi0 Photoproduction on Nuclei written by Claire M. Tarbert and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The coherent nuclear 1/40 photoproduction reaction is sensitive to the nuclear matter form factor i.e. the distribution of matter within the nucleus. Accurate measurements of the nuclear matter distribution as charaterised by the r.m.s. radius are important for applications to nuclear theories, neutron stars, atomic parity non-conservation and heavy ion collisions. This thesis presents the results from a new experiment to measure coherent 1/40 photoproduction on 208Pb, 40Ca, 16O and 12C. The ultimate goal of the research programme is to make a high precision measurement of the nature of the neutron skin of 208Pb. The first major step in this direction is to achieve an accurate data set of coherent pion photoproduction which is presented in this thesis. The experiment was performed in the A2 hall of the MAMI electron accelerator facility at the InstitÄut fur Kernphysik, Mainz, Germany. An 883 MeV beam of electrons was directed on to a 101m nickel radiator producing a Bremsstrahlung photon beam which was then 'tagged' with a resolution of 2 MeV using the Glasgow Photon Tagging Spectrometer. The photon beam was incident on one of the 4 experimental targets inducing the reaction A(°,1/40)A. The neutral 1/40s were then detected via their two photon decay in the newly installed 4 1/4 Crystal Ball and TAPS detector systems. The results from all four targets are presented as differential and total cross sections covering the energy range E°=(135-300) MeV and covering the full 180± of the pion polar angle. Comparisons have been made with previous data and with the latest theoretical calculations of Dreschel et. al. which employ detailed pion optical potentials in describing the pion-nucleus final state interaction. It is concluded that the 208Pb cross sections show good agreement with the calculations indicating that the pion-nucleus FSI distortions are well accounted for by the model. A pleasing reduction in statistical and systematic uncertainties from previous measurements is also observed. While the 208Pb cross sections are finalised it is suggested that the 12C and 16O data would benefit from a further analysis utilising the coincident detection of nuclear decay photons to isolate incoherent events and allow a more detailed comparison with theory. A first comparison of the theoretical model with the new high quality data gives first indications of a neutron skin on 208Pb. A future scheme for the full detailed extraction of the matter distribution from the new data set is also suggested.
Book Synopsis Coherent [pi] Photoproduction on Nuclei by : Claire Margaret Tarbert
Download or read book Coherent [pi] Photoproduction on Nuclei written by Claire Margaret Tarbert and published by . This book was released on 2007 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Determination of Nuclear Radius and [pi0] Lifetime by the Coherent Photoproduction of Neutral Mesons from Complex Nuclei by : Gilbert Davidson
Download or read book A Determination of Nuclear Radius and [pi0] Lifetime by the Coherent Photoproduction of Neutral Mesons from Complex Nuclei written by Gilbert Davidson and published by . This book was released on 1959 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nuclear Pion Photoproduction by : Anton Nagl
Download or read book Nuclear Pion Photoproduction written by Anton Nagl and published by Springer. This book was released on 2006-04-11 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photoproduction of pions from complex nuclei has become an investigative tool for (1) the detailed form of the elementary photopion amplitude, (2) the pion-nucleus optical potential, (3) nuclear structure, and (4) off-shell and medium effects on the elementary amplitude in nuclear processes. In this book, all these aspects are considered in detail. With improved experimental accuracy and beam tech- nology the study of nuclear pion photoproduction will break new ground and become an even more powerful investigative tool. This monograph is intended as an introductory guide as well as a reference manual for grad- uate students and researchers working in this important area of physics.
Book Synopsis Coherent Photoproduction of Uncharged Pi Mesons in Complex Nuclei by : Robert Louis Barringer
Download or read book Coherent Photoproduction of Uncharged Pi Mesons in Complex Nuclei written by Robert Louis Barringer and published by . This book was released on 1956 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coherent [pi]0 Photoproduction on 4He Using 290 Mev Photons by : Daniel Raymond Tieger
Download or read book Coherent [pi]0 Photoproduction on 4He Using 290 Mev Photons written by Daniel Raymond Tieger and published by . This book was released on 1984 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coherent [pi]0 Photoproduction at Intermediate Energy by : J. H. Koch
Download or read book Coherent [pi]0 Photoproduction at Intermediate Energy written by J. H. Koch and published by . This book was released on 1983 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pi-zero Photoproduction from Complex Nuclei by : Walter Thomas Meyer
Download or read book Pi-zero Photoproduction from Complex Nuclei written by Walter Thomas Meyer and published by . This book was released on 1971 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoproduction of Pions on Nucleons and Nuclei by : A. A. Komar
Download or read book Photoproduction of Pions on Nucleons and Nuclei written by A. A. Komar and published by Nova Publishers. This book was released on 1989 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies the theoretical and experimental aspects of photoproduction of pions on nucleons and nuclei in the range of photon energies up to 1 GeV. Theoretical predictions are presented based on dispersion relationships of multiple pion photoproduction amplitudes. The problem of a complete experiment i
Book Synopsis Gamma Ray and Pi-zero Production from Hydrogen and Complex Nuclei by 320 MeV Gamma Rays by : Bruce Leslie Beron
Download or read book Gamma Ray and Pi-zero Production from Hydrogen and Complex Nuclei by 320 MeV Gamma Rays written by Bruce Leslie Beron and published by . This book was released on 1972 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coherent Rho 0 Photoproduction in Bulk Matter at High Energies by :
Download or read book Coherent Rho 0 Photoproduction in Bulk Matter at High Energies written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The momentum transfer [Delta]k required for a photon to scatter from a target and emerge as a [rho]° decreases as the photon energy k rises. For k> 3 x 1014 eV, [Delta]k is small enough that the interaction cannot be localized to a single nucleus. At still higher energies, photons may coherently scatter elastically from bulk matter and emerge as a [rho]°, in a manner akin to kaon regeneration. Constructive interference from the different nuclei coherently raises the cross section and the interaction probability rises linearly with energy. At energies above 1023 eV, coherent conversion is the dominant process; photons interact predominantly as [rho]°. We compute the coherent scattering probabilities in slabs of lead, water and rock, and discuss the implications of the increased hadronic interaction probabilities for photons on ultra-high energy shower development.
Book Synopsis Gamma Ray and Pi-zero Production from Hydrogen and Complex Nuclei by 320 MeV Gamma Rays by : Bruce Leslie Beron
Download or read book Gamma Ray and Pi-zero Production from Hydrogen and Complex Nuclei by 320 MeV Gamma Rays written by Bruce Leslie Beron and published by . This book was released on 1972 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coherent production of multi-pion systems on nuclei by : Michael Frank Letheren
Download or read book Coherent production of multi-pion systems on nuclei written by Michael Frank Letheren and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis (Theoretical Study of Pion and Kaon Photoproduction in Nuclei). Final Technical Report by :
Download or read book (Theoretical Study of Pion and Kaon Photoproduction in Nuclei). Final Technical Report written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The contract work was initiated by J. Epstein. The emphasis of the proposal was on (a) the continuation of DWIA calculations of the (.gamma., .pi./sup + -/) reaction in the .delta.(1232) region with the extension to the (.gamma., .pi.°) reaction and (b) the application of the DWIA approach to the (.gamma., K) reaction. The (.gamma., .pi.°) work was intended to be in close collaboration with the experimental studies underway at Bates Linear Accelerator and the (.gamma., K/sup + -/) calculations are relevant to proposed high duty factor electron accelerators in the 1 to 4 GeV region. DWIA calculations were carried out for coherent (.gamma., .pi.°) reactions in 12C. Although the DWIA approach seems less fundamental than the current .delta.-hole model calculations, we had hopes that it could be more readily applicable to incoherent reactions leaving the target nucleus in the excited state. Epstein hoped to improve the reliability of the DWIA calculations for coherent (.gamma., .pi.°) production by better treatment of the .delta. propagating in the nuclear medium. In parallel with the (.gamma., .pi.°) work, Epstein carried on an active collaboration with William Donnelly on the (.gamma., K/sup + -/) problem. They had succeeded in a relatively complete description of the reaction for 12C, and were beginning to extend the results to heavy nuclei, when Epstein abruptly resigned his academic post at Boston University (in August 1983) and took an industrial position. Justus Koch of NIKEF, working together with Donnelly, and assisted by modest per diem funds from this grant, the .gamma., K/sup + -/ calculations were carried forward. A copy of the talk by Donnelly entitled Photo- and Electron-Production of Kaons and the Study of Hypernuclei given October 29, 1984 at Bad Honnef, Germany is enclosed. The talk covers the results of the work initiated by Epstein and Donnelly, and completed by Koch and Donnelly.
Book Synopsis Coherent [pi] O Production in Neutrino Reactions by : Dieter Rein
Download or read book Coherent [pi] O Production in Neutrino Reactions written by Dieter Rein and published by . This book was released on 1982 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental Study of Shadowing in Photoproduction from Nuclei by : Stefan Jan Michalowski
Download or read book An Experimental Study of Shadowing in Photoproduction from Nuclei written by Stefan Jan Michalowski and published by . This book was released on 1977 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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