scholarly journals NN Effective Interaction from the Brueckner Theory and Applications to Nuclear Systems

2012 ◽  
Vol 196 ◽  
pp. 39-55 ◽  
Author(s):  
Umberto Lombardo
Keyword(s):  
Effective Interaction ◽  
Nuclear Systems ◽  
Brueckner Theory

Effective Interaction in Nuclear Systems

1965 ◽  
Vol 137 (3B) ◽  
pp. B487-B492 ◽  
Author(s):  
Daniel S. Koltun
Keyword(s):  
Effective Interaction ◽  
Nuclear Systems

scholarly journals Deformed Hartree-Fock calculations for semileptonic processes in nuclei

2019 ◽  
Vol 11 ◽  
Author(s):  
T. S. Kosmas
Keyword(s):  
Single Particle ◽  
Good Description ◽  
Effective Interaction ◽  
Random Phase ◽  
Model Space ◽  
Spectroscopic Properties ◽  
Particle Spectrum ◽  
Hartree Fock ◽  
Nuclear Systems ◽  
Nuclear Processes

In nuclear structure calculations, the Deformed Hartree-Fock (DHF) provides generally a good description for the low-lying spectroscopic properties of odd-even, odd-odd and even-even nuclear systems of which the consideration of the deformation is motivated by many reasons. The common random phase approximations (RPA, QRPA, etc.) mostly used to accurately evaluate the transition matrix elements in many nuclear processes [1,2], are appropriate for only spherical even-even nuclear systems even though, sometimes, isotopes considered as rather deformed are studied. In the present work, we discuss the treatment within the DHF method of nuclei in the region A = 70 — 80. This region includes isotopes (like 72Ge, 76Ge, 72Se, etc) interesting for studying many nuclear processes as the ,0/3-decay, scattering of dark matter candidates off nuclei, μ~ —> e± conversions in nuclei. In our calculations the model space comprises 1P3/2, 0f5/2, 1pi/2 and 0p9/2 single particle Orbitals assuming 56Ni to be the inert core. The effective interaction employed, has been quite successfully used previously to describe many important features of the nuclei in this region. The lowest prolate Hartree-Fock single particle spectrum of some isotopes (72Ge, 76Ge) has been used to test the good angular momentum states which in this method are projected out from the intrinsic HF states. As an application, we examine the predictions of DHF for the exotic (μ~,ε~) conversion process. The contributions of all basic μ~ —> e~ operators originating from a general effective Lagrangian [2] are compared with those of normal QRPA methods obtained previously.

scholarly journals PAIRING CORRELATIONS IN NUCLEAR SYSTEMS, FROM INFINITE MATTER TO FINITE NUCLEI

2001 ◽  
Vol 15 (10n11) ◽  
pp. 1501-1509 ◽  
Author(s):  
Ø. ELGARØY ◽  
T. ENGELAND ◽  
M. HJORTH-JENSEN ◽  
E. OSNES
Keyword(s):  
Partial Wave ◽  
Energy Gap ◽  
Effective Interaction ◽  
Nucleon Nucleon ◽  
Model Calculations ◽  
Nuclear Systems ◽  
Pairing Correlations ◽  
Nucleon Nucleon Interaction ◽  
Near Degeneracy ◽  
Finite Nuclei

Finite nuclei such as those found in the chain of even tin isotopes from 102 Sn to 130 Sn , exhibit a near constancy of the [Formula: see text] excitation energy, a constancy which can be related to strong pairing correlations and the near degeneracy in energy of the relevant single-particle orbits. Large shell-model calculations for these isotopes reveal that the major contribution to pairing correlations in the tin isotopes stems from the 1S0 partial wave in the nucleon-nucleon interaction. Omitting this partial wave and the 3P2 wave in the construction of an effective interaction, results in a spectrum which has essentially no correspondence with experiment. These partial wave are also of importance for infinite neutron matter and nuclear matter and give the largest contribution to the pairing interaction and energy gap in neutron star matter.

TEMPERATURE DEPENDENCE OF THE EFFECTIVE INTERACTION IN NUCLEAR MATTER

1987 ◽  
Vol 48 (C2) ◽  
pp. C2-301-C2-304
Author(s):  
M. BALDO ◽  
G. GIANSIRACUSA ◽  
U. LOMBARDO
Keyword(s):  
Nuclear Matter ◽  
Temperature Dependence ◽  
Effective Interaction

European Developments in Thermalhydraulics for Innovative Nuclear Systems

2011 ◽  
pp. 70-81
Author(s):  
Ferry Roelofs ◽  
Andreas Class ◽  
Xu Cheng ◽  
Paride Paride Meloni ◽  
Katrien Van Tichelen ◽  
...  
Keyword(s):  
Nuclear Systems

MEDIA SOCIALIZATION OF PERSONALITY IN THE CONTEXT OF INMUTATION IN THE MASS MEDIA

2021 ◽  
pp. 104-109
Author(s):  
Chernysh O.O.
Keyword(s):  
Mass Media ◽  
Negative Impact ◽  
Effective Interaction ◽  
Individual Characteristics ◽  
Media Culture ◽  
Active Growth ◽  
Media Space ◽  
The Media ◽  
The Individual

The urgency of the researched problem is connected with the growing role of mass media in modern conditions leads to change of values and transformation of identity of the person. The active growth of the role of the media, their influence on the formation and development of personality leads to the concept of “media socialization” and immutation in the media. The aim of the study is to outline the possibilities of the process of media socialization in the context of immutation in the media. The methods of our research are: analysis of pedagogical, psychological, literature, synthesis, comparison, generalization. The article analyzes the views of domestic and foreign scientists on the problem of immutation in the media and the transformation of the information space. In the context of the mass nature of the immutation of society, the concept of “media socialization” becomes relevant, which is the basis for reducing the negative impact of the media on the individual.The author identifies the lack of a thorough study of the concept of “media socialization” in modern scientific thought. Thus, media socialization is associated with the transformation of traditional means of socialization, and is to assimilate and reproduce the social experience of mankind with the help of new media.The article analyzes the essence of the concepts “media space”, “mass media” and “immutation”. The influence of mass media on the formation and development of the modern personality is described in detail.The study concluded that it is necessary to form a media culture of the individual, to establish safe and effective interaction of young people with the modern media system, the formation of media awareness, media literacy and media competence in accordance with age and individual characteristics for successful media socialization. The role of state bodies in solving the problem of media socialization of the individual was also determined. It is determined that the process of formation of media culture in youth should take place at the level of traditional institutions of socialization of the individual.The author sees the prospect of further research in a detailed analysis and study of the potential of educational institutions as an institution and a means of counteracting the mass nature of the immutation of society.Key words: immutation, media socialization, mass media, media space, information.

Interionic Pair Potential, hard sphere diameter and entropy of mixing of NaCd compound forming binary molten alloys under the framework of Pseudopotential theory

2014 ◽  
Vol 10 (6) ◽  
pp. 2843-2852
Author(s):  
Sujeet Kumar Chatterjee ◽  
Lokesh Chandra Prasad ◽  
Ajaya Bhattarai
Keyword(s):  
Nearest Neighbor ◽  
Effective Interaction ◽  
Pair Potential ◽  
Sphere Diameter ◽  
Compound Formation ◽  
Pseudopotential Theory ◽  
Energy Of Mixing ◽  
Asymmetric Behaviour ◽  
Statistical Mechanical ◽  
Free Energy Of Mixing

The observed asymmetric behaviour of mixing of  NaCd liquid alloys around equiatomic composition with smaller negative values for free energy of mixing at compound forming concentration, i.e. GMXS = -4.9KJ at Ccd =0.66 has  aroused our interest to undertake a theoretical investigation of this system.A simple statistical mechanical theory based on compound formation model has been used to investigate the energetics of formation of intermetallic compound Cd2Na in the melt through the study of entropy of mixing.Besides, the interionic interactions between component atoms Na and Cd of the alloys have been understood through the study of interionic pair potential фij(r), calculated from pseudopotential theory in the light of CF model.Our study of фij(r) suggest that the effective interaction between Na-Na atoms decreases on alloying with Cd atom, being minimum for compound forming alloy( Cd 0.66 Na 0.34 ).The nearest neighbor distance between Na-Na atoms does not alter on alloying. Like wise Na-Na,  effective interaction between  Cd-Cd atom decreases from pure state to NaCd alloys, being smaller at compound forming  concentration Cd 0.66 Na 0.34.The computed values of SM from pseudopotential theory are positive at all concentrations, but the agreement between theory and experimental is not satisfactory. This might be happening due to parameterisation of σ3 and Ψcompound.

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