An Energy-Dependent, Lane-Model, Nucleon-Nucleus Optical Potential PDF Download
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Author: D. M. Patterson
Publisher:
ISBN:
Category :
Languages : en
Pages : 9
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Book Description
A global, energy-dependent, Lane-model, nucleon-nucleus optical potential has been determined by fitting (p, n)-IAS angular distributions between 25 and 45 MeV while maintaining the fit obtained by Becchetti and Greenlees to proton elastic-scattering data over a wide mass and energy range, thus firmly establishing the essential validity of the Lane model for nucleon-nucleus optical potentials.
Author: D. M. Patterson
Publisher:
ISBN:
Category :
Languages : en
Pages : 9
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Book Description
A global, energy-dependent, Lane-model, nucleon-nucleus optical potential has been determined by fitting (p, n)-IAS angular distributions between 25 and 45 MeV while maintaining the fit obtained by Becchetti and Greenlees to proton elastic-scattering data over a wide mass and energy range, thus firmly establishing the essential validity of the Lane model for nucleon-nucleus optical potentials.
Author: Peter Edward Hodgson
Publisher: World Scientific
ISBN: 9789810217228
Category : Science
Languages : en
Pages : 440
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Book Description
The nucleon optical model is widely used to calculate the elastic scattering cross-sections and polarisations for the interaction of neutrons and protons with atomic nuclei. The optical model potentials not only describe the scattering but also provide the wave functions needed to analyse a wide range of nuclear reactions. They also unify many aspects of nuclear reactions and nuclear structure. This book consists of a comprehensive introduction to the subject and a selection of papers by the author describing the optical model in detail. It contains full references to the original literature with many examples of the application of the model to the analysis of experimental data.
Author: Tarlok Singh Cheema
Publisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 376
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 6
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Book Description
The authors report on the development of new global optical model potentials for nucleon-nucleus scattering at medium energies. Using both Schroedinger and Dirac scattering formalisms, the goal is to construct a physically realistic optical potential describing nucleon-nucleus elastic scattering observables for a projectile energy range of (perhaps) 20 meV to (perhaps) 2 GeV and a target mass range of 16 to 209, excluding regions of strong nuclear deformation. They use a phenomenological approach guided by conclusions from recent microscopic studies. The experimental database consists largely of proton-nucleus elastic differential cross sections, analyzing powers, spin-rotation functions, and total reaction cross sections, and neutron-nucleus total cross sections. They will use this database in a nonlinear least-squares adjustment of optical model parameters in both relativistic equivalent Schroedinger (including relativistic kinematics) and Dirac (second-order reduction) formalisms. Isospin will be introduced through the standard Lane model and a relativistic generalization of that model.
Author: Charles D. Goodman
Publisher: Springer Science & Business Media
ISBN: 1468488600
Category : Science
Languages : en
Pages : 525
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Book Description
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.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Initial results are presented for the determination of a global medium-energy nucleon-nucleus phenomenological optical-model potential using a relativistic Schroedinger representation. The starting point for this work is the global phenomenological optical-model potential of Schwandt)ital et al.), which is based on measured elastic scattering cross sections and analyzing power for polarized protons ranging from 80 to 180 MeV. This potential is optimally modified to reproduce experimental proton reaction cross sections as a function of energy, while allowing only minimal deterioration in the fits to the elastic cross sections and analyzing powers. Further modifications in the absorptive potential were found necessary to extrapolate the modified potential to higher energies. The final potential is converted to a neutron-nucleus potential by use of standard Lane model assumptions and by accounting approximately for the Coulomb correction. Comparisons of measured and calculated proton reaction and neutron total cross sections are presented for 27Al, 56Fe, and 2°8Pb. Medium-energy optical-model potentials for complex projectiles are briefly discussed in an appendix. 7 refs., 20 figs.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 640
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Book Description
![A General Nucleon-nucleus Optical Potential, A]40, E[50 MeV. PDF](https://books.google.com/books/content/images/frontcover/ecjXHAAACAAJ?fife=w80-h100)
Author: Frederick Daniel Becchetti
Publisher:
ISBN:
Category : Nuclear optical models
Languages : en
Pages : 176
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Author: Robert Wayne Manweiler
Publisher:
ISBN:
Category : Nuclear optical models
Languages : en
Pages : 278
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Author: United States. Energy Research and Development Administration. Technical Information Center
Publisher:
ISBN:
Category : Force and energy
Languages : en
Pages : 1680
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