Binding energies and radii of α-cluster-type nuclei from calculations based on the strictly restricted dynamics model

2002 ◽  
Vol 65 (4) ◽  
pp. 720-724
Author(s):  
T. Krasta ◽  
J. Ruža ◽  
J. Tambergs ◽  
O. Katkevičius ◽  
J. A. Castilho Alcarás
Keyword(s):  
Binding Energies ◽  
Dynamics Model ◽  
Cluster Type

Evaluation of Effective Nucleon-Nucleon Potential and Description of α-Cluster Type Nuclei in Restricted Dynamics Approach

1997 ◽  
Vol 06 (03) ◽  
pp. 341-390 ◽  
Author(s):  
J. Tambergs ◽  
J. Ruža ◽  
T. Krasta ◽  
J. A. Castilho Alcarás ◽  
O. Katkevičius
Keyword(s):  
Transition Probabilities ◽  
Electric Quadrupole ◽  
Nucleon Nucleon ◽  
Binding Energies ◽  
Dynamics Model ◽  
Nucleon Interaction ◽  
Nucleon System ◽  
Nucleon Potential ◽  
Cluster Type ◽  
Nucleon Nucleon Interaction

The application of the Restricted Dynamics Approach in nuclear theory, based on the approximate solution of many-particle Schrödinger equation, which accounts for all conservation laws in many-nucleon system, is discussed. The Strictly Restricted Dynamics Model is used for the evaluation of binding energies, level schemes, E2 and M1 transition probabilities as well as the electric quadrupole and magnetic dipole momenta of light α-cluster type nuclei in the region 4 ≤ A ≤ 40. The parameters of effective nucleon-nucleon interaction potential are evaluated from the ground state binding energies of doubly magic nuclei 4 He , 16 O and 40 Ca .

scholarly journals SEARCH FOR POSSIBLE WAY OF PRODUCING SUPER-HEAVY ELEMENTS: DYNAMIC STUDY ON DAMPED REACTIONS OF 244Pu+244Pu, 238U+238U and 197Au+197Au

2005 ◽  
Vol 20 (34) ◽  
pp. 2619-2627 ◽  
Author(s):  
NING WANG ◽  
ZHUXIA LI ◽  
XIZHEN WU ◽  
ENGUANG ZHAO
Keyword(s):  
Molecular Dynamics ◽  
Time Scale ◽  
Incident Energy ◽  
Composite System ◽  
Binding Energies ◽  
Decay Process ◽  
Heavy Elements ◽  
Quantum Molecular Dynamics ◽  
Dynamics Model ◽  
Production Probability

By using the Improved Quantum Molecular Dynamics model, the 244 Pu +244 Pu , 238 U +238 U and 197 Au +197 Au reactions at the energy range of E c.m. =800 MeV to 2000 MeV are studied. We find that the production probability of superheavy fragments (SHFs) with Z≥114 for the 244 Pu +244 Pu reaction is much higher compared with that for the 238 U +238 U reaction and no product of SHF is found for the 197 Au +197 Au . The production probability of SHFs strongly depends on the incident energy and a narrowly peaked energy dependence of production probability is found. The decay mechanism of the composite system of projectile and target is studied and the time scale of decay process is explored. The binding energies and the shapes of SHFs are studied. The binding energies of SHFs are broadly distributed and the shapes of SHFs are strongly deformed.

scholarly journals The role of the Heisenberg principle in constrained molecular dynamics model

2019 ◽  
Vol 28 (06) ◽  
pp. 1950039
Author(s):  
K. Wang ◽  
A. Bonasera ◽  
H. Zheng ◽  
G. Q. Zhang ◽  
Y. G. Ma ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Pauli Principle ◽  
Binding Energies ◽  
Light Nuclei ◽  
Scattering Data ◽  
Collision Term ◽  
Dynamics Model ◽  
Heisenberg Principle ◽  
The One

We implement the Heisenberg principle into the Constrained Molecular Dynamics model with a similar approach to the Pauli principle using the one-body occupation probability [Formula: see text]. Results of the modified and the original model with comparisons to data are given. The binding energies and the radii of light nuclei obtained with the modified model are more consistent with the experimental data than the original one. The collision term and the density distribution are tested through a comparison to p+[Formula: see text]C elastic scattering data. Some simulations for fragmentation and superheavy nuclei production are also discussed.

scholarly journals Пики термодесорбции водорода: моделирование и интерпретация

2021 ◽  
Vol 91 (2) ◽  
pp. 222
Author(s):  
Ю.В. Заика ◽  
Е.К. Костикова ◽  
Ю.С. Нечаев
Keyword(s):  
Parametric Identification ◽  
Binding Energies ◽  
Limiting Factors ◽  
Dynamics Model ◽  
Dynamic Boundary Conditions ◽  
Heating Rates ◽  
Degree Of Dominance ◽  
Analytical Criterion ◽  
Component Spectrum ◽  
Activation Energy Of Desorption

Various models of hydrogen thermal desorption peaks are analyzed. The dynamics model of the volume-averaged concentration with a continuum parameter allows integrally taking into account the degree of dominance of the limiting factors (diffusion and recombination of atoms into molecules during desorption). An analytical criterion for peaks symmetry is proposed in the context of comparison with the method of decomposing the component spectrum into the sum of Gaussian. Modifications of the Kissinger method for estimating the activation energy of desorption in experiments with several heating rates and procedures for solving the inverse problem of parametric identification of a unimodal peak using only one heating rate are presented. A comparative with a diffusion model with dynamic boundary conditions is performed. It is shown that the cause of local peaks can be not only capture with different binding energies but also the dynamics of interaction of bulk and surface processes, change in the surface structure during heating.

Hydrogen in amorphous Ni–Zr: Pressure concentration isotherms, site occupation, and binding energies

1986 ◽  
Vol 1 (6) ◽  
pp. 765-773 ◽  
Author(s):  
E. Batalla ◽  
J.O. Strom-Olsen ◽  
Z. Altounian ◽  
D. Boothroyd ◽  
R. Harris
Keyword(s):  
Binding Energies ◽  
Site Occupation ◽  
Pressure Concentration

Multiple Donors in Zinc Oxide Substrates

2002 ◽  
Vol 719 ◽  
Author(s):  
K. Thonke ◽  
N. Kerwien ◽  
A. Wysmolek ◽  
M. Potemski ◽  
A. Waag ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Chemical Vapor ◽  
Binding Energies ◽  
Vapor Transport ◽  
Chemical Vapor Transport ◽  
Oxide Substrates ◽  
Multiple Donors ◽  
Major Donors ◽  
Available Zinc ◽  
Transport Technique

AbstractWe investigate by photoluminescence (PL) nominally undoped, commercially available Zinc Oxide substrates (from Eagle Picher) grown by seeded chemical vapor transport technique in order to identify residual donors and acceptors. In low temperature PL spectra the dominant emission comes from the decay of bound exciton lines at around 3.36 eV. Zeeman measurements allow the identification of the two strongest lines and some weaker lines in-between as donorrelated. From the associated two-electron satellite lines binding energies of the major donors of 48 meV and 55 meV, respectively, can be deduced.

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