Microscopic Approaches to Nuclear Structure Calculations PDF Download
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Author: Società italiana di fisica
Publisher:
ISBN:
Category : Microscopy
Languages : en
Pages : 422
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Book Description
Author: Società italiana di fisica
Publisher:
ISBN:
Category : Microscopy
Languages : en
Pages : 422
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Book Description
Author: Università di Napoli. Struttura della Materia e Fisica Applicata. Dipartimento di Fisica Nucleare
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: A. Covello
Publisher:
ISBN:
Category :
Languages : it
Pages : 402
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Author: A. Castenholz
Publisher: CRC Press
ISBN: 1000124649
Category : Mathematics
Languages : en
Pages : 570
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Book Description
This book is devoted to algebraic models and their applications. It presents a simple, but thorough, pedagogic approach, starting from the most elementary ideas and building up to the most recent results of advanced theories. The book is designed for a graduate level treatment.
Author: Luigi Coraggio
Publisher: Frontiers Media SA
ISBN: 2889665852
Category : Science
Languages : en
Pages : 209
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 13
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Book Description
A major goal in nuclear physics is to understand how nuclear structure comes about from the underlying interactions between nucleons. This requires modelling nuclei as collections of strongly interacting particles. Using realistic nucleon-nucleon potentials, supplemented with consistent three-nucleon potentials and two-body electroweak current operators, variational Monte Carlo methods are used to calculate nuclear ground-state properties, such as the binding energy, electromagnetic form factors, and momentum distributions. Other properties such as excited states and low-energy reactions are also calculable with these methods.
Author: Paul Denis Stevenson
Publisher: Frontiers Media SA
ISBN: 2889665674
Category : Science
Languages : en
Pages : 171
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 18
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Book Description
Here we present calculated results on such diverse properties as nuclear energy levels, ground-state masses and shapes, [beta]-decay properties and fission-barrier heights. Our approach to these calculations is to use a unified theoretical framework within which the above properties can all be studied. The results are obtained in the macroscopic-microscopic approach in which a microscopic nuclear-structure single-particle model with extensions is combined with a macroscopic model, such as the liquid drop model. In this model the total potential energy of the nucleus may be calculated as a function of shape. The maxima and minima in this function correspond to such features as the ground state, fission saddle points and shape-isomeric states. Various transition rate matrix elements are determined from wave-functions calculated in the single-particle model with pairing and other relevant residual interactions taken into account.
Author:
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Category :
Languages : en
Pages : 8
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Book Description
The revival of interest in nuclear ground-state octupole deformations that occurred in the 1980's was stimulated by observations in 1980 of particularly large deviations between calculated and experimental masses in the Ra region, in a global calculation of nuclear ground-state masses. By minimizing the total potential energy with respect to octupole shape degrees of freedom in addition to?2 and?4 used originally, a vastly improved agreement between calculated and experimental masses was obtained. To study the global behavior and interrelationships between other nuclear properties, we calculate nuclear ground-state masses, spins, pairing gaps and?-decay and half-lives and compare the results to experimental qualities. The calculations are based on the macroscopic-microscopic approach, with the microscopic contributions calculated in a folded-Yukawa single-particle potential.
Author:
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Category :
Languages : en
Pages : 217
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Book Description
The thesis is concerned with the relation between a microscopic approach and a macroscopic approach to the study of the nuclear binding energy as a function of neutron number, proton number and nuclear deformations. First of all we give a general discussion of the potential energy of a system which can be divided into a bulk region and a thin skin layer. We find that this energy can be written down in the usual liquid drop type of expression, i.e., in terms of the volume, the surface area and other macroscopic properties of the system. The discussion is illustrated by a study of noninteracting particles in an orthorhombic potential well with zero potential inside and infinite potential outside. The total energy is calculated both exactly (a microscopic approach) and also from a liquid drop type of expression (a macroscopic approach). It turns out that the latter approach reproduces the smooth average of the exact results very well. We next make a digression to study the saddle point shapes of a charged conducting drop on a pure liquid drop model. We compare the properties of a conducting drop with those of a drop whose charges are distributed uniformly throughout its volume. The latter is the usual model employed in the study of nuclear fission. We also determined some of the more important symmetric saddle point shapes. In the last part of the thesis we generalize a method due to Strutinski to synthesize a microscopic approach (the Nilsson model) and a macroscopic approach (the liquid drop model). The results are applied to realistic nuclei. The possible occurrence of shape isomers comes as a natural consequence of the present calculation. Their trends as a function of neutron and proton members are discussed and the results are tabulated. We also work out the stabilities of the predicted superheavy nuclei with proton number around 114 and neutron number around 184 and 196. Some of these nuclei appear to have extremely long life times. The possible experimental production of these superheavy nuclei are also discussed.
