MULTICHANNEL ANALYSIS OF THE 16B NUCLEUS

2011 ◽  
Vol 20 (04) ◽  
pp. 1022-1025
Author(s):  
MARIANNE DUFOUR ◽  
PIERRE DESCOUVEMONT
Keyword(s):  
Shell Model ◽  
Ground State ◽  
Cluster Model ◽  
Model Calculations ◽  
Generator Coordinate Method ◽  
Coordinate Method ◽  
Narrow Peak ◽  
Generator Coordinate ◽  
Multichannel Analysis

This work is devoted to a Generator-Coordinate-Method investigation of the 16 B spectrum with an Extended Two-Cluster Model which includes many 15 B + n channels. We find that the narrow peak above the 15 B + n threshold seen in the experiments of Kalpachieva et al. and of Lecouey et al. can be assigned to a [Formula: see text] resonance. Several resonances are obtained near the 15 B + n threshold, in particular a [Formula: see text] state which could be a possible candidate for the 16 B ground state. Comparison with Shell Model calculations is performed.

Many particle and many hole states in 31Mg

2006 ◽  
Vol 21 (31n33) ◽  
pp. 2461-2467
Author(s):  
Masaaki Kimura
Keyword(s):  
Molecular Dynamics ◽  
Magnetic Moment ◽  
Ground State ◽  
Level Structure ◽  
Magic Number ◽  
Theoretical Framework ◽  
Β Decay ◽  
Generator Coordinate Method ◽  
Coordinate Method ◽  
Generator Coordinate

The low-lying level structure of 31 Mg has been investigated by the theoretical framework of deformed-basis antisymmetrized molecular dynamics (DAMD) plus generator coordinate method (GCM) with the Gogny D1S force. It is shown that the N =20 magic number is broken and the intruder configuration (neutron 2p3h configuration) dominates the ground state. The observed data such as the magnetic moment and β decay strength are well reproduced.

Generator Coordinate Method and Short Range Correlations

1973 ◽  
Vol 28 (3-4) ◽  
pp. 393-395
Author(s):  
J. da Providência ◽  
C. M. Shakin
Keyword(s):  
Excited States ◽  
Cluster Expansion ◽  
Ground State ◽  
Short Range ◽  
Generator Coordinate Method ◽  
Correlated Systems ◽  
Coordinate Method ◽  
Generator Coordinate ◽  
Singular Interactions ◽  
Short Range Correlations

AbstractIt is shown that the cluster expansion formalism previously developed as a basis for a theory of the ground state of correlated systems may be generalised in such a way as to enable the application of the generator coordinate method in the presence of singular interactions, thereby providing also a theory for excited states.

NEW CLUSTER MODEL BASED ON THE GENERATOR COORDINATE METHOD

2003 ◽  
Vol 18 (02n06) ◽  
pp. 178-181 ◽  
Author(s):  
MAKOTO ITO ◽  
KIYOSHI KATŌ ◽  
KIYOMI IKEDA
Keyword(s):  
Cluster Model ◽  
Weak Coupling ◽  
Energy Surface ◽  
Generator Coordinate Method ◽  
Coordinate Method ◽  
Model Based ◽  
Generator Coordinate ◽  
Molecular Resonances ◽  
The Stability ◽  
Adiabatic Energy

New cluster model based on the Generator Coordinate Method (GCM) is proposed for the studies on the molecular resonances recently observed in the neutron-rich Be isotope. The new model is applied to the 10 Be =4 He +6 He system and its adiabatic energy surface is calculated. It is found that both the weak-coupling states and the strong-coupling ones are quite naturally generated depending on the 4He-6He relative distance. The stability of both states is also discussed.

The generator coordinate method as an approximation to the shell model

1975 ◽  
Vol 243 (3) ◽  
pp. 440-448 ◽  
Author(s):  
K. Goeke ◽  
M.V. Mihailović ◽  
K. Allaart ◽  
A. Faessler
Keyword(s):  
Shell Model ◽  
Generator Coordinate Method ◽  
Coordinate Method ◽  
Generator Coordinate

Generator Coordinate Method for Scattering: An Exact Solution

1973 ◽  
Vol 7 (6) ◽  
pp. 2274-2281 ◽  
Author(s):  
B. Giraud ◽  
J. C. Hocquenghem ◽  
A. Lumbroso
Keyword(s):  
Exact Solution ◽  
Generator Coordinate Method ◽  
Coordinate Method ◽  
Generator Coordinate
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