scholarly journals Four-nucleon system with Δ-isobar excitation

2008 ◽  
Vol 660 (5) ◽  
pp. 471-477 ◽  
Author(s):  
A. Deltuva ◽  
A.C. Fonseca ◽  
P.U. Sauer
Keyword(s):  
Nucleon System ◽  
Isobar Excitation

Description of electromagnetic processes in the three-nucleon system with Δ-isobar excitation

2001 ◽  
Vol 689 (1-2) ◽  
pp. 433-436 ◽  
Author(s):  
L.P. Yuan ◽  
K. Chmielewski ◽  
M. Oelsner ◽  
P.U. Sauer ◽  
A.C. Fonseca ◽  
...  
Keyword(s):  
Nucleon System ◽  
Electromagnetic Processes ◽  
Isobar Excitation

NUCLEON-DEUTERON SCATTERING WITH Δ-ISOBAR EXCITATION: NEW TECHNICAL DEVELOPMENTS

2003 ◽  
Vol 18 (02n06) ◽  
pp. 426-435
Author(s):  
A. DELTUVA ◽  
K. CHMIELEWSKI ◽  
P. U. SAUER
Keyword(s):  
Nucleon Force ◽  
Deuteron Scattering ◽  
Nucleon System ◽  
Technical Developments ◽  
Reference Potential ◽  
Channel Potential ◽  
Isobar Excitation ◽  
A New Technique ◽  
Coupled Channel ◽  
Bonn Potential

A new technique for solving three-particle scattering equations is developed. It is based on the two-dimensional Chebyshev expansion of the two-baryon transition matrix. Its validity and its effectiveness is demonstrated. Furthermore, a new perturbative technique for simulating exact scattering results is developed. It has the potential for understanding three-particle reaction mechanisms in detail. The dynamics of the examples is based on a two-baryon potential which allows for the excitation or a nucleon to a Δ-isobar; the coupled-channel potential yields an effective three-nucleon force in the three-nucleon system. The purely nucleonic reference potential is the charge-dependent Bonn potential.

Electron scattering and the few-nucleon system

1993 ◽  
Vol 43 (3-4) ◽  
pp. 433-447
Author(s):  
S. Platchkov
Keyword(s):  
Electron Scattering ◽  
Nucleon System

NATURAL ORBITALS AND ELECTRON ELASTIC MAGNETIC SCATTERING BY NUCLEI

1996 ◽  
Vol 05 (04) ◽  
pp. 717-724 ◽  
Author(s):  
D.N. KADREV ◽  
A.N. ANTONOV ◽  
M.V. STOITSOV ◽  
S.S. DIMITROVA
Keyword(s):  
Density Fluctuation ◽  
Form Factors ◽  
Wave Functions ◽  
Magnetic Scattering ◽  
Correlation Effects ◽  
Valence Nucleon ◽  
Nucleon System ◽  
Natural Orbitals ◽  
Transverse Form Factor ◽  
Fluctuation Model

Natural orbitals obtained within the coherent density fluctuation model and containing nucleon correlation effects are used to calculate characteristics of the A-nucleon system, such as the electron elastic magnetic scattering form factors. The calculations are performed for nuclei with a doubly-closed core and a valence nucleon in a stretched configuration (j=l+1/2), such as the 17 O and 41 Ca nuclei. It is shown that the calculations of the transverse form factor using natural orbitals improve the agreement with the experimental data in comparison with the case when shell-model single-particle wave functions are used.

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