نتایج جستجو برای: shell model

تعداد نتایج: 2146395  

2008
F. A. MAJEED F. A. Majeed

Unrestricted shell model calculations in the lower fp-shell region for the nuclei 46Ti, 46Cr and 46V have been performed for the isovector T = 1 positive parity states using the shell model code OXBASH for Windows by employing the effective interactions GXPF1, FPD6 and KB3G. The level schemes and transition strengths B(E2; ↓) are compared with the recently available experimental data. A very go...

2004
J. P. Valencia H. C. Wu

The pf-shell (i.e. the 2p 1 2 -2p 3 2 -1f 5 2 shell) is important for a variety of problems in nuclear structure, however, the study of this shell has been hindered by the huge size of the shell model space. In recent years there have been studies by using the Monte-Carlo shell model [1] and that based on the pseudo-SU(4) symmetry model [2]. The original Wigner Supermultiplet SU(4) model[3] is ...

Journal: :نشریه دانشکده فنی 0
محمد رضایی پژند رضا خواجوی

curls and curves of a shell interweave its various strain modes and link them together. this interactional behavior has yet frustrated all attempts for the construction of shell templates, which needs for an individual element test in traditional approaches. such a test fails to work for shell elements and must be reconstructed. in this paper, it is tried to study shell interactional behavior a...

2006
G. Hagen

We present a new and efficient method to obtain a Gamow shell-model basis and matrix elements generated by realistic nucleon-nucleon interactions. We derive a self-consistent Hartree-Fock potential from the renormalized NLO interaction model. The corresponding Gamow one-body eigenstates are generated in a plane wave basis in order to build a Gamow shell-model set of basis states for the closed ...

1998
D. J. Dean J. A. White

The shell-model Monte Carlo (SMMC) technique transforms the traditional nuclear shell-model problem into a path-integral over auxiliary fields. We describe below the method and its applications to four physics issues: calculations of sd-pf-shell nuclei, a discussion of electron-capture rates in pf-shell nuclei, exploration of pairing correlations in unstable nuclei, and level densities in rare ...

Journal: :The European Physical Journal A 2021

We present the code HF-SHELL for solving self-consistent mean-field equations configuration-interaction shell model Hamiltonians in proton-neutron formalism. The can calculate both ground-state and finite-temperature properties Hartree-Fock (HF), HF+Bardeen-Cooper-Schrieffer (HF+BCS), Hartree-Fock-Bogoliubov (HFB) approximations. Particle-number projection after variation is incorporated to red...

Journal: :Journal of biomechanics 2007
Eli J Weinberg Mohammad R Kaazempur Mofrad

This paper presents a shell finite element formulation appropriate for simulating the heart valve leaflet mechanics, including three-dimensional (3D) stress and strain effects. A 4-node mixed-interpolation shell is formulated in convected coordinates. This shell model is made capable of handling arbitrary 3D material models by use of an algorithm that satisfies the shell stress assumption at ev...

2009
Mark A. Hayner

The Wave-based Finite Element Method or WFEM is applied to in-vacuo cylindrical shells to studystructure-borne wave interaction with bulkhead and keel-type plate attachments. The frequency rangeconsidered is from one to ten times the shell "ring" frequency. The goal is to better understand theshell-plate interaction, which plays an important role in the acoustic scattering and r...

2015
Manoj kumar Mahendra Kumar Yogesh Kumar

The theoretical model, developed by Khare model, has been modified to calculate the total cross sections for K-shell, L-shell and M-shell ionization of uranium (Z=92) atom due to electron impact at incident electron energy from ionization threshold to 1 GeV. The various calculated cross sections are in remarkable agreement with available experimental data and other theoretical cross sections. P...

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