A Study of the Spin-orbit Splitting in Nuclei Near Closed Shells PDF Download

Author: Robert R. Scheerbaum
Publisher:
ISBN:
Category : Nuclear shell theory
Languages : en
Pages : 552

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Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 680

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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 304

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Author: William Graham Richards
Publisher: Oxford University Press, USA
ISBN:
Category : Molecular orbitals
Languages : en
Pages : 126

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Author: Fred Petrovich
Publisher: Springer Science & Business Media
ISBN: 1468447068
Category : Science
Languages : en
Pages : 651

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Book Description
This volume contains the proceedings of the "International Conference on Spin Excitations in Nuclei" held in Telluride, Colo rado, March 25-27, 1982. The motivation for the conference was, in a large part due to the recent development of new variable energy accelerators which produce high quality beams of electrons, protons, and pions that are providing the first precise information on spin excitations in nuclei over a large range of spin and mass. In the past such data had been restricted primarily to light nuclei and were generally resolution limited. Perhaps, the most exciting new result has been the clear observation of the elusive spin-dipole strength (Gamow Teller and Ml) in medium and heavy mass nuclei through the use of the (p,n) and (p,p') reactions at or near zero degrees with 100-200 MeV incident protons. Energy dependence in the isovector parts of the nucleon-nucleon interaction make the 100-200 MeV energy region particularly appropriate for such studies. The clean data from (e,e'), ('IT,'IT'), (p,p'), and (p,n) on high spin "stretched" states which have particularly simple structure has also been quite impor tant. The recent results contain important new information on the nature of the spin dependent forces in nuclei. These in turn are inherently related to the properties of the nuclear mesonic field and the underlying quantum chromodynamics.

Author: Aldo Covello
Publisher: World Scientific
ISBN: 9810247257
Category : Science
Languages : en
Pages : 628

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This volume is devoted to recent achievements and new challenges in the field of nuclear structure. Both experimental and theoretical issues in the forefront of current research on the subject are covered by leading physicists.

Author: Aldo Covello
Publisher: World Scientific
ISBN: 981449030X
Category : Science
Languages : en
Pages : 628

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This volume is devoted to recent achievements and new challenges in the field of nuclear structure. Both experimental and theoretical issues in the forefront of current research on the subject are covered by leading physicists.

Author: Nicolas Michel
Publisher: Springer Nature
ISBN: 3030693562
Category : Science
Languages : en
Pages : 514

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This book provides the first graduate-level, self-contained introduction to recent developments that lead to the formulation of the configuration-interaction approach for open quantum systems, the Gamow shell model, which provides a unitary description of quantum many-body system in different regimes of binding, and enables the unification in the description of nuclear structure and reactions. The Gamow shell model extends and generalizes the phenomenologically successful nuclear shell model to the domain of weakly-bound near-threshold states and resonances, offering a systematic tool to understand and categorize data on nuclear spectra, moments, collective excitations, particle and electromagnetic decays, clustering, elastic and inelastic scattering cross sections, and radiative capture cross sections of interest to astrophysics. The approach is of interest beyond nuclear physics and based on general properties of quasi-stationary solutions of the Schrödinger equation – so-called Gamow states. For the benefit of graduate students and newcomers to the field, the quantum-mechanical fundamentals are introduced in some detail. The text also provides a historical overview of how the field has evolved from the early days of the nuclear shell model to recent experimental developments, in both nuclear physics and related fields, supporting the unified description. The text contains many worked examples and several numerical codes are introduced to allow the reader to test different aspects of the continuum shell model discussed in the book.

Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 464

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Author: Manuel DE Llano (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 248

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Based on the studies of S. Lie and E. Cartan in the theory of continuous groups of transformations, M. Moshinsky has reformulated the nuclear shell many-body problem in second-quantization language. The methods due to J.P. Elliott for simplifying the basis set of state functions by classification according to the group SU(3) are recast into the above-mentioned reformulation. The purpose is to make low-energy nuclear calculations feasible for nuclei with 4 and more particles in the 2s-1d shell and thus render the possibility of probing for SU(3) symmetries in these nuclei. A hamiltonian model consisting of pairing and quadrupole-quadrupole terms is known to approximate respectively the short- and longranged correlations between nucleons given by an arbitrary, reasonably shaped two-nucleon central interaction potential. The former model is generalized to include exchange effects at the long range as well as spin-orbit coupling, and is studied in detail from the viewpoint of its various group symmetries. It is then employed to calculate the low-lying levels of Fluorine-20 which show reasonable accord with the empirical level-scheme. (Author).