scholarly journals Nuclear symmetry energy components and their ratio: A new approach within the coherent density fluctuation model

2021 ◽  
Vol 104 (4) ◽  
Author(s):  
M. K. Gaidarov ◽  
E. Moya de Guerra ◽  
A. N. Antonov ◽  
I. C. Danchev ◽  
P. Sarriguren ◽  
...  
Keyword(s):  
Symmetry Energy ◽  
Density Fluctuation ◽  
Nuclear Symmetry Energy ◽  
New Approach ◽  
Fluctuation Model ◽  
Energy Components

scholarly journals Surface properties for Ne, Na, Mg, Al and Si isotopes in the Coherent Density Fluctuation Model using the relativistic mean field densities

2021 ◽  
Author(s):  
Jeet Amrit Pattnaik ◽  
R.N. Panda ◽  
M. Bhuyan ◽  
S.K. Patra
Keyword(s):  
Surface Properties ◽  
Symmetry Energy ◽  
Density Functional ◽  
Density Fluctuation ◽  
Mean Field ◽  
Abnormal Behavior ◽  
Coordinate Space ◽  
Energy Density Functional ◽  
Relativistic Mean Field ◽  
Fluctuation Model

We have systematically studied the surface properties, such as symmetry energy, neutron pressure, and symmetry energy curvature coefficient for Ne, Na, Mg, Al, and Si nuclei from the proton to neutron drip-lines. The Coherent Density Fluctuation Model (CDFM) is used to estimate these quantities taking the relativistic mean-field densities as inputs. The Br ¨uckner energy density functional is taken for the nuclear matter binding energy and local density approximation is applied for its conversion to coordinate space. The symmetry energy again decomposed to the volume and surface components within the liquid drop model formalism to the volume and surface parts separately. Before calculating the surface properties of finite nuclei, the calculated bulk properties are compared with the experimental data, whenever available. The NL3* parameter set with the BCS pairing approach in an axially deformed frame-work is used to take care of the pairing correlation when needed. The deformed density is converted to its spherical equivalent with a two Gaussian fitting, which is used as an input for the calculation of weight function in the CDFM approximation. With the help of the symmetry energy for the recently isotopes <sup>29</sup>F, <sup>28</sup>Ne, <sup>29,30</sup>Na and <sup>31,35,36</sup>Mg are considered to be within the island of inversion emphasized [Phys. Lett. B 772, 529 (2017)]. Although we get large symmetric energies corresponding to a few neutron numbers for this isotopic chain as expected, an irregular trend appears for all these considered nuclei. The possible reason behind this abnormal behavior of symmetry energy for these lighter mass nuclei is also included in the discussion, which gives a direction for future analysis.

Density dependence of symmetry energy in deformed 162Sm nucleus

2019 ◽  
Vol 28 (11) ◽  
pp. 1950100 ◽  
Author(s):  
K. C. Naik ◽  
Manpreet Kaur ◽  
Ankit Kumar ◽  
S. K. Patra
Keyword(s):  
Density Dependence ◽  
Symmetry Energy ◽  
Density Fluctuation ◽  
Spherical Equivalent ◽  
Fluctuation Model

The density dependence of symmetry energy in deformed [Formula: see text]Sm nucleus is discussed in the context of conversion of deformed density into spherical equivalent one by using the different methods. The results present a variation in the symmetry energy, using the spherical equivalent density extracted by different procedures, within the coherent density fluctuation model.

The nuclear symmetry energy in relativistic Brueckner-Hartree-Fock calculations

1987 ◽  
Vol 199 (4) ◽  
pp. 469-474 ◽  
Author(s):  
H. Müther ◽  
M. Prakash ◽  
T.L. Ainsworth
Keyword(s):  
Symmetry Energy ◽  
Nuclear Symmetry Energy ◽  
Hartree Fock

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.

Sign in / Sign up

Export Citation Format

Share Document