排序方式: 共有24条查询结果,搜索用时 15 毫秒
1.
2.
3.
It is suggested that the interacting boson model be used in the analysis of electron scattering data. Qualitative features of the expected behavior of the inelastic excitation of some 2+ states in the transitional SmNd region are discussed. 相似文献
4.
A. E. L. Dieperink P. Van Isacker 《The European Physical Journal A - Hadrons and Nuclei》2007,32(1):11-18
We discuss to what extent information on ground-state properties of finite nuclei (energies and radii) can be used to obtain
constraints on the symmetry energy in nuclear matter and its dependence on the density. The starting point is a generalized
Weizs?cker formula for ground-state energies. In particular, effects from the Wigner energy and shell structure on the symmetry
energy are investigated. Strong correlations in the parameter space prevent a clear isolation of the surface contribution.
Use of neutron skin information improves the situation. The result of the analysis appears consistent with a rather soft density
dependence of the symmetry energy in nuclear matter. 相似文献
5.
6.
A.E.L. Dieperink T. De Forest I. Sick R.A. Brandenburg 《Physics letters. [Part B]》1976,63(3):261-264
Quasi-elastic electron from 3He is calculated in the framework of impulse approximation as a test of a ground state wave function calculated from the Reid soft-core interaction with the Faddeev technique. A comparison with high momentum transfer electron scattering data is made. 相似文献
7.
8.
A classical limit, which is amenable to a geometrical interpretation, is discussed for the vibron model of molecular vibrotational spectra. Both diatomic and triatomic molecules are considered. An example of a coupling between the two stretching modes of a linear triatomic is examined in detail. 相似文献
9.
The interacting boson approximation (IBA) model has been used to interpret the ground-state charge distributions and lowest 2+ transition charge densities of the even samarium isotopes for A = 144–154. Phenomenological boson transition densities associated with the nucleons comprising the s- and d-bosons of the IBA were determined via a least squares fit analysis of charge and transition densities in the Sm isotopes. The application of these boson transition densities to higher excited 0+ and 2+ states of Sm, and to 0+ and 2+ transitions in neighboring nuclei, such as Nd and Gd, is described. IBA predictions for the transition densities of the three lowest 2+ levels of 154Gd are given and compared to theoretical transition densities based on Hartree-Fock calculations. The deduced quadrupole boson transition densities are in fair agreement with densities derived previously from 150Nd data. It is also shown how certain moments of the best fit boson transition densities can simply and successfully describe rms radii, isomer shifts, B(E2) strengths, and transition radii for the Sm isotopes. 相似文献
10.
Multi-step collective quadrupole excitations in nuclei are described using an algebraic method which does not require a coupled-channel calculation. Adiabatic effects are discussed. Applications to the axially-symmetric deformed rotor, anharmonic quadrupole vibrator, and γ-soft rotor, as well as to transitional nuclei, are presented using the consistent-Q formulation of the interacting boson model. 相似文献