نتایج جستجو برای: deformed shell model

تعداد نتایج: 2157451  

2002
F. R. Xu P. M. Walker R. Wyss

Even-even A'110 nuclei approaching the astrophysical r-process path have been investigated using both the cranked and the configuration-constrained shell models. The calculations show that, with increasing neutron number in the Z>40 nuclides, nuclear shapes evolve from prolate, through triaxial to oblate deformations. In contrast to other regions of the nuclear chart, pronounced oblate shapes d...

Free vibration of a simply-supported magneto-electro-elastic doubly-curved nano-shell is studied based on the first-order shear deformation theory in the presence of the rotary inertia effect. To model the electric and magnetic behaviors of the nano-shell, Gauss’s laws for electrostatics and magneto statics are used. By using Navier’s method, the partial differential equations of motion are red...

Journal: :Journal of Visualization and Computer Animation 2009
Jin Huang Hanqiu Sun Kun Zhou Hujun Bao

Embedding geometric textures in a shell space around an arbitrary surface has been a popular way to add highly detailed geometric details and enhance visual richness in graphics community, but the dynamic effects of geometric textures have not been modeled and simulated. In this paper, we introduce an efficient algorithm for deforming geometric textures with dynamic effects. The algorithm consi...

Journal: :Physics Letters B 2023

We explore two-particle transfer reactions as a crucial probe of the occurrence shape coexistence in phase transitions. The (t,p) to ground state and excited 0+ states are calculated for isotope chain even-even Zirconium isotopes starting from stable nuclei up beyond current experimental limits. Two-particle spectroscopic factors derived Monte Carlo Shell Model calculations used, together with ...

2004
Masaaki Kimura Hisashi Horiuchi

The low-lying level structures of Ne, Ne and Ne which are related to the breaking of the N=20 shell closure have been studied by the framework of the deformed-basis antisymmetrized molecular dynamics plus generator coordinate method using Gogny D1S force. The properties of the many-particle and many-hole states are discussed as well as that of the ground band. We predict that the negative-parit...

2007
M. Ramdhane

In previous works anomalies were observed in binding energies for the island of inversion nuclei centered at Z=11, N=21 by the comparison of theoretical calculations and experiment. An attempt was made in this work using an improved term of shell corrections to observe the evolution of these anomalies. This term was added to the macroscopic part of the previous mass formula and binding energy c...

Journal: :international journal of advanced design and manufacturing technology 0
morteza raminnia corresponding author

in this study, thermo-mechanical nonlinear vibration of a polyethylene (pe) cylindrical shell embedded in an elastic foundation was investigated. the shell is reinforced by armchair carbon nanotubes (cnts) where characteristics of the equivalent composite being determined using mori-tanaka model. the elastic medium is simulated using the spring constant of the winkler-type,  . employing nonline...

Journal: :Physics Letters B 2022

We provide a description of deformed N=Z nuclei in formalism ?-like quartets. Quartets are constructed variationally by resorting to the use proper intrinsic states. Various types states introduced which generate different sets quartets for given nucleus. Energy spectra generated via configuration-interaction calculations spaces built with these The approach has been applied 24Mg and 28Si sd sh...

2003
A. Görgen R. Wadsworth

High-spin states in 108Cd were studied following the reaction 64Ni(48Ca,4n) at a beam energy of 207 MeV. Gamma rays were detected using the Gammasphere array. Two rotational bands have been observed at very high angular momentum. Measurements of fractional Doppler shifts yielded lower limits for the quadrupole moments and showed that the observed structures are at least as deformed as the super...

2011
N. Minkov P. M. Walker

The relation between the quadrupole-octupole deformation and the structure of high-K isomers in heavy even-even nuclei is studied through a reflection asymmetric deformed shell model including a BCS procedure with constant pairing interaction. Two-quasiparticle states with Kπ = 4−, 5−, 6−, 6 and 7− are considered in the region of actinide nuclei (U, Pu and Cm) and rare-earth nuclei (Nd, Sm and ...

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