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Dependence of the Three-Nucleon Binding Energy on Some Different Effects

✍ Scribed by Prof. Dr. Ahmed Osman; Dr. S. Ramadan


Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
476 KB
Volume
499
Category
Article
ISSN
0003-3804

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✦ Synopsis


The bound state of three-nucleon system is studied as a three-body problem which is solved following the different approaches of the Faddeev formalism as well as the unitary pole approximation. The three-body problem is reduced to a set of coupled integral equations by using separable approximations. Numerical calculations are carried out for the resulting integral equations and the separable expansion. In the present work, we calculate the ground-state binding energy of the bound three-nucleon system 3H. The main interest of the present work is to investigate the sensitivity of the three-nucleon binding energy to different effects. For this reason, we study the dependence of this energy on different forms of local and separable nucleon-nucleon potentials, the effective range of the nucleon-nucleon interaction, and on the percent of the D state in the deuteron wave function. Also we test the sensitivity of the three-nucleon binding energy to the considered number of terms from the separable expansion.

Die Abhangigkeit der Bindungsenergie dreier Sukleonen von verschiedenen Effekten

I n h a l t sub ersic ht. Der gebundene Zustand eines Drei-Nukleonensystems wird als Dreikorperproblem behandelt und sowohl nach dem Fadejevformalismus als auch nach der Unitaren-Polnaherung gelost. Das Dreikorperproblem wird dabei zu einem Satz gekoppelter Integralgleichungen unter der Verwendung einer Separationsniiherung reduziert. In der vorliegenden Arbeit wird die Bindungscnergie des Grundzustands des 3H-Systems bestimmt. Unser Hauptinteresse liegt hier bei der Untersuchung der Abhangigkeit dieser Bindnngsenergie von verschiedenen Effekten. Deshalb werden verschiedene Formen des lokalen und separaten Nukleon-Nukleonpotentials, unterschiedliche Reichweiten der Nukleon-Wukleonwechselwirkung und ein variabler Anteil des D-Zustands in der Deuteronwellenfunktion betrachtet. Ebenso wird die Empfidlichkeit der Bindungsenergie gegeniiber der Zahl beachteter Terme in der Separationsniiherung untersucht.


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