Shell-Model Configuration Mixing — Foundations And Phenomenology

2005 ◽  
Author(s):  
B. Alex Brown
Keyword(s):  
Shell Model ◽  
Model Configuration ◽  
Configuration Mixing

scholarly journals The Electro-Excitation Form Factors for Low-Lying States of 7Li Nucleus

2010 ◽  
Vol 7 (1) ◽  
pp. 105-112
Author(s):  
Baghdad Science Journal
Keyword(s):  
Shell Model ◽  
Electron Scattering ◽  
Form Factors ◽  
Model Space ◽  
Theoretical Models ◽  
Inelastic Electron ◽  
Oscillator Shell ◽  
21.60 Cs ◽  
Configuration Mixing ◽  
Transverse Electron

The transverse electron scattering form factors have been studied for low –lying excited states of 7Li nucleus. These states are specified by J? T= (0.478MeV), (4.63MeV) and (6.68MeV). The transitions to these states are taking place by both isoscalar and isovector components. These form factors have been analyzed in the framework of the multi-nucleon configuration mixing of harmonic oscillator shell model with size parameter brms=1.74fm. The universal two-body of Cohen-Kurath is used to generate the 1p-shell wave functions. The core polarization effects are included in the calculations through effective g-factors and resolved many discrepancies with experiments. A higher configuration effect outside the 1p-shell model space, such as the 2p-shell, enhances the form factors for q-values and reproduces the data. The present results are compared with other theoretical models. PACS: 25.30.Bf Elastic electron scattering - 25.30.Dh Inelastic electron scattering to specific states – 21.60.Cs Shell model – 27.20. +n 5? A ?19

THE CONFIGURATION MIXING EFFECTS ON MAGNETIC MOMENTS OF MEDIUM-WEIGHT AND HEAVY Λ-HYPERNUCLEI

1993 ◽  
Vol 02 (02) ◽  
pp. 423-435 ◽  
Author(s):  
Y. TANAKA
Keyword(s):  
Perturbation Theory ◽  
Shell Model ◽  
Magnetic Moments ◽  
Mixing Effects ◽  
Configuration Mixing ◽  
Medium Weight

We have investigated magnetic moments of medium-weight and heavy N±1Λ hypernuclei within the framework of shell model. Using the perturbation theory, we have estimated the hyperon-induced configuration mixing effects as well as nucleon-induced configuration mixing effects on magnetic moments of these hypernuclei. The hyperon-induced configuration mixing effects turn out to be small in many cases.

THE SPIN AND MAGNETIC MOMENT OF CESIUM-138

1967 ◽  
Vol 45 (10) ◽  
pp. 3393-3400 ◽  
Author(s):  
G. M. Stinson ◽  
N. P. Archer ◽  
J. C. Waddington ◽  
R. G. Summers-Gill
Keyword(s):  
Wave Function ◽  
Magnetic Moment ◽  
Atomic Beam ◽  
Delta Function ◽  
Source Material ◽  
Neutron Fission ◽  
Model Configuration ◽  
Residual N ◽  
Thermal Neutron Fission ◽  
Configuration Mixing

Using source material isolated from the thermal neutron fission of 235U, an atomic beam investigation of 138Cs has been carried out. The results are I = 3 and [Formula: see text] nuclear magnetons. Calculations using a delta-function residual n–p force show that no pure shell-model configuration, appropriate to the mass, is capable of yielding the observed spin. Although the magnetic moment is just consistent with either (g7/2)7/2 or (g7/2)5/2 for the proton configuration and ƒ7/2 for the odd neutron, one may conclude that some configuration mixing is involved. The proton part of a plausible wave function is predominantly (g7/2)7/2 with a spin-5/2 admixture—either (g7/2)5/2 or (d5/2)5/2. In this respect it is similar to the wave function of 140La.

scholarly journals Simple models for shell-model configuration densities

2006 ◽  
Vol 74 (6) ◽  
Author(s):  
Edgar Terán ◽  
Calvin W. Johnson
Keyword(s):  
Shell Model ◽  
Model Configuration ◽  
Simple Models

scholarly journals Rotational Levels in a Simple Shell Model Configuration

1971 ◽  
Vol 45 (1) ◽  
pp. 85-103 ◽  
Author(s):  
Yasutoshi Tanaka ◽  
Kengo Ogawa ◽  
Akito Arima
Keyword(s):  
Shell Model ◽  
Model Configuration
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