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Deuteron Photo Disintegration At Large Energies
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Book Synopsis Deuteron Photo-disintegration at Large Energies by :
Download or read book Deuteron Photo-disintegration at Large Energies written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Current proposals at CEBAF include the measurement of cross sections and polarization observables of exclusive photo-reactions such as deuteron photo-disintegration and pion photo-production from nucleons. At issue is the applicability of traditional meson-exchange models versus quark models of these reactions at photon energies of several GeV. Beam energies above 4 GeV at CEBAF could make possible the measurement of these reactions over a kinematic range sufficiently broad to distinguish between the models. Estimates of counting rates for a Hall-C experiment to measure the [gamma]d [yields] pn cross section are presented.
Book Synopsis High Energy Two-Body Deuteron Photodisintegration by :
Download or read book High Energy Two-Body Deuteron Photodisintegration written by and published by . This book was released on 1999 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: The differential cross section for two-body deuteron photodisintegration was measured at photon energies between 0.8 and 4.0 GeV and centerofmass angles [theta]cm =37°, 53°, 70°, and 90° as part of CEBAF experiment E89012. Constituent counting rules predict a scaling of this cross section at asymptotic energies. In previous experiments this scaling has surprisingly been observed at energies between 1.4 and 2.8 GeV at 90°. The results from this experiment are in reasonable agreement with previous measurements at lower energies. The data at 70° and 90° show a constituent counting rule behavior up to 4.0 GeV photon energy. The 37° and 53°g data do not agree with the constituent counting rule prediction. The new data are compared with a variety of theoretical models inspired by quantum chromodynamics (QCD) and traditional hadronic nuclear physics.
Book Synopsis Photodisintegration of the Deuteron at High Energy by :
Download or read book Photodisintegration of the Deuteron at High Energy written by and published by . This book was released on 1992 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the angular distribution for the?d→+pn reaction were performed at SLAC for photon energies between 0.7 and 1.8 GeV (experiment NE8) and between 1.6 and 4.4. GeV (experiment NE17). The final results for experiment NE8 will be presented, but only preliminary results for NE17 will be discussed. The data at?{sub cm} = 90° appear to follow the constituent counting rules. The angular distribution at high photon energies exhibit large values of the cross section at forward angles. There is evidence that the cross section may also be large at backward angles and high energies.
Book Synopsis Photodisintegration of the Deuteron in the Medium Energy Range by : Johan Jacob de Swart
Download or read book Photodisintegration of the Deuteron in the Medium Energy Range written by Johan Jacob de Swart and published by . This book was released on 1959 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Deuteron Photodisintegration at High Energies by : William Spencer Gilbert
Download or read book Deuteron Photodisintegration at High Energies written by William Spencer Gilbert and published by . This book was released on 1952 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Energy Photo-disintegration of the Deuteron by : M. E. Rose
Download or read book High Energy Photo-disintegration of the Deuteron written by M. E. Rose and published by . This book was released on 1947 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Deuteron Forward Photodisintegration by :
Download or read book Deuteron Forward Photodisintegration written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The few-nucleon problem in nuclear physics and the few-electron problem in atomic physics are shown to possess similarities. Relativistic aspects of the latter are reviewed. The radiative decay of the 3P1 excited state of helium-like ions to the 1S0 ground state is shown to be a theoretical analogue of low-energy deuteron forward photodisintegration. Both have large relativistic components. The extended Siegert's theorem, which permits application of Siegert's technique to arbitrary photon wave lengths, is applied to both transitions. Physical arguments for the two processes are stressed, and the relevance of interaction currents is discussed. 28 references.
Book Synopsis The Photodisintegration of the Deuteron at High Energies by : Joel Harris Parks
Download or read book The Photodisintegration of the Deuteron at High Energies written by Joel Harris Parks and published by . This book was released on 1959 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of the Azimuthal Asymmetry of Deuteron Photodisintegration in the Energy Region E{sub {gamma}} by :
Download or read book Determination of the Azimuthal Asymmetry of Deuteron Photodisintegration in the Energy Region E{sub {gamma}} written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Deuteron photodisintegration is a benchmark process for the investigation of the role of quarks and gluons in nuclei. Existing theoretical models of this process describe the available cross sections with the same degree of success. Therefore, spin-dependent observables are crucial for a better understanding of the underlying dynamical mechanisms. However, data on the induced polarization (P y), along with the polarization transfers (Cx and Cz), have been shown to be insensitive to differences between theoretical models. On the other hand, the beam-spin asymmetry [Sigma] is predicted to have a large sensitivity and is expected to help in identifying the energy at which the transition from the hadronic to the quark-gluon picture of the deuteron takes place. Here, the work done to determine the experimental values of the beam-spin asymmetry in deuteron photodisintegration for photon energies between 1.1 - 2.3 GeV is presented. The data were taken with the CLAS at the Thomas Jefferson National Accelerator Facility during the g13 experiment. Photons with linear polarization of ~80% were produced using the coherent bremsstrahlung facility in Hall B. The work done by the author to calibrate a specific detector system, select deuteron photodisintegration events, study the degree of photon polarization, and finally determine the azimuthal asymmetry and any systematic uncertainties associate with it, is comprehensively explained. This work shows that the collected data provide the kinematic coverage and statistics to test the available QCD-based models. The results of this study show that the available theoretical models in their current state do not adequately predict the azimuthal asymmetry in the energy region 1.1 - 2.3 GeV.
Book Synopsis High Energy Photodisintegration of the Deuteron by :
Download or read book High Energy Photodisintegration of the Deuteron written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A review of both the data base and current model predictions for the observables of the deuteron photodisintegration reaction, [gamma]d → p{sub n} is presented. Recent cross section and polarization measurements at Jefferson Lab are shown and discussed. A few conclusions are attempted.
Book Synopsis High Energy Two-body Deuteron Photodisintegration by : Bart Paul Terburg
Download or read book High Energy Two-body Deuteron Photodisintegration written by Bart Paul Terburg and published by . This book was released on 1999 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Deuteron Photodisintegration in the Medium Energy Range by : Rauno M. K. Hämäläinen
Download or read book Deuteron Photodisintegration in the Medium Energy Range written by Rauno M. K. Hämäläinen and published by . This book was released on 1962 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Deuteron Photodisintegration at Intermediate Energies by : Peter Anthony Wallace
Download or read book Deuteron Photodisintegration at Intermediate Energies written by Peter Anthony Wallace and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of the Azimuthal Asymmetry of Deuteron Photodisintegration in the Energy Region E? by :
Download or read book Determination of the Azimuthal Asymmetry of Deuteron Photodisintegration in the Energy Region E? written by and published by . This book was released on 2012 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deuteron photodisintegration is a benchmark process for the investigation of the role of quarks and gluons in nuclei. Existing theoretical models of this process describe the available cross sections with the same degree of success. Therefore, spin-dependent observables are crucial for a better understanding of the underlying dynamical mechanisms. However, data on the induced polarization (P y), along with the polarization transfers (Cx and Cz ), have been shown to be insensitive to differences between theoretical models. On the other hand, the beam-spin asymmetry ? is predicted to have a large sensitivity and is expected to help in identifying the energy at which the transition from the hadronic to the quark-gluon picture of the deuteron takes place. Here, the work done to determine the experimental values of the beam-spin asymmetry in deuteron photodisintegration for photon energies between 1.1 - 2.3 GeV is presented. The data were taken with the CLAS at the Thomas Jefferson National Accelerator Facility during the g13 experiment. Photons with linear polarization of 8̃0% were produced using the coherent bremsstrahlung facility in Hall B. The work done by the author to calibrate a specific detector system, select deuteron photodisintegration events, study the degree of photon polarization, and finally determine the azimuthal asymmetry and any systematic uncertainties associate with it, is comprehensively explained. This work shows that the collected data provide the kinematic coverage and statistics to test the available QCD-based models. The results of this study show that the available theoretical models in their current state do not adequately predict the azimuthal asymmetry in the energy region 1.1 - 2.3 GeV.
Book Synopsis The Photodisintegration of the Deuteron by Polarized Photons by : F. F. Liu
Download or read book The Photodisintegration of the Deuteron by Polarized Photons written by F. F. Liu and published by . This book was released on 1964 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The asymmetry in the photodisintegration of the deuteron by polarized photons has been measured between photon energies of 75 and 230 MeV. Measurements are made mostly at 90 degrees in the center of mass system, but limited data at 45 degrees and 135 degrees are also obtained. The data below 140 MeV are compared with current theories. At 90 degrees our results are generally smaller than theoretical calculations. The measured asymmetry changes sign at about 130 MeV and shows a backward peaking at the high energy points. (Author).
Book Synopsis A Phenomenological Fit to Deuteron Photodisintegration Data in the Medium Energy Region by : Fearing, Harold W
Download or read book A Phenomenological Fit to Deuteron Photodisintegration Data in the Medium Energy Region written by Fearing, Harold W and published by . This book was released on 1985 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photodisintegration of the Deuteron from 500 to 1000 Mev by : R. Ching
Download or read book Photodisintegration of the Deuteron from 500 to 1000 Mev written by R. Ching and published by . This book was released on 1965 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The photodisintegration of the deuteron has been studied at energies comparable with the second and third pion-nucleon isobars using the Stanford Mark III linear electron accelerator. No evidence has been found for any resonant behavior in the energy region of interest. (Author).
