نتایج جستجو برای: deformed shell model

تعداد نتایج: 2157451  

2009
Sarmistha Kumar Chaudhuri Saurav Samanta

The deformed Galilean generators are constructed on a space where both position and momentum coordinates are noncommutating operators. A dynamical model invariant under deformed phase space transformations is constructed. The Dirac brackets of this model reproduce the original non-commutative algebra. Also, the deformed generators are abstracted from this model in a consistent manner. Finally, ...

A. Shafyei H. Edris M. Alizadeh,

     Heat transfer mechanisms and the solidification process are simulated for a continuous casting machine and the geometric shape of the liquid pool is predicted considering different conditions. A heat transfer and solidification model is described for the continuous casting of steel slabs. The model has been established on the basis of the technical conditions of the slab caster in the con...

شاکری, بنین , پیامی, محمود ,

  In this work, using the liquid drop model in the context of the stabilized jellium model, we have studied the fission of charged Na clusters. In this study we have assumed a deformed non-spherical shape for the cluster. The ground state energies, critical sizes, fission barrier height, and the evaporation energies have been calculated. The results show a better agreement to the experimental r...

2008
Pavlos Protopapas

The most consistently useful simple model for the study of odd deformed nuclei, the particle-rotor model (strong coupling limit of the core-particle coupling model) has nevertheless been beset by a long-standing problem: It is necessary in many cases to introduce an ad hoc parameter that reduces the size of the Coriolis interaction coupling the collective and single-particle motions. Of the num...

Journal: :Physics Letters B 2023

The unstable N=42 nucleus 72Zn has been studied using multiple safe Coulomb excitation in inverse kinematics. experiment was performed at the REX-ISOLDE facility CERN making first use of silicon detector array C-REX combination with γ-ray spectrometer Miniball. high angular coverage allowed to determine reduced transition strengths for decay yrast 01+, 21+ and 41+ as well 02+ 22+ states 72Zn. q...

Journal: :journal of solid mechanics 0
m jabbari mechanical engineering department, yasouj university, p.o.box: 75914-353, yasouj, iran m zamani nejad mechanical engineering department, yasouj university, p.o.box: 75914-353, yasouj, iran m ghannad mechanical engineering faculty, shahrood university, shahrood, iran

in this paper, thermo-elastic analysis of a rotating thick truncated conical shell subjected to the temperature gradient, internal pressure and external pressure is presented. given the existence of shear stress in the conical shell due to thickness change along the axial direction, the governing equations are obtained based on first-order shear deformation theory (fsdt). these equations are so...

2007
Z. G. Wei R. C. Batra

The dynamic plastic buckling of a homogeneous and isotropic thin thermoviscoplastic cylindrical shell loaded radially is studied analytically by analyzing the stability of its stressed/deformed configuration under superimposed infinitesimal perturbations. The wave number of the perturbation that maximizes its initial growth rate is assumed to determine the buckling mode. Cubic algebraic equatio...

2008
Wung-Hong Huang

We analyze the fast-moving string in the magnetic Melvin field background and find that the associated effective Lagrangian of string sigma model describes the spin chain model with external magnetic field. The spin vector in the spin chain has been properly deformed and is living on the deformed two-sphere or deformed two-dimensional hyperboloid, depending on the direction around which the str...

Journal: :HNPS Advances in Nuclear Physics 2022

Abstract Proxy-SU(3) symmetry is an approximation scheme extending the Elliott SU(3) algebra of sd shell to heavier shells, in order make possible application properties cutting down size required calculations. When introduced 2017, had been justified by calculations carried out within Nilsson model, elementary model based on a 3-dimensional harmonic oscillator with cylindrical symmetry, applic...

2002
A. Poves J. Sánchez Solano

The existence of n-particle n-hole deformed yrare bands in the N=28 isotones is explored using full pf -shell diagonalizations and the Lanczos Strength Function method. We find different 2p-2h and 4p-4h collective bands that, when allowed to mix, more often disappear. Only the 2p-2h yrare band in Cr and the 4p-4h yrare band in Ni survive, and only in this latter case, due to the reduced density...

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