The electric quadrupole moments of the decuplet baryons are calculated in the bound state approach to the SU(3) Skyrme model. In this approach, all the quadrupole moments of the decuplets are found to be proportional to the third component of the baryon isospin. Contrary to the SU(3) collective model, the kaonic contribution is as important as the pionic one. The transitional quadrupole moments...

The electric quadrupole moments of the decuplet baryons are calculated in the bound state approach to the SU(3) Skyrme model. In this approach, all the quadrupole moments of the decuplets are found to be proportional to the third component of the baryon isospin. Contrary to the SU(3) collective model, the kaonic contribution is as important as the pionic one. The transitional quadrupole moments...

The interacting boson model is extended to describe the spectroscopy of superdeformed bands. Microscopic structure of the model in the second minimum is discussed and superdeformed bosons are introduced as the new building blocks. Solutions of a quadrupole Hamiltonian are implemented through the 1/N expansion method. Effects of the quadrupole parameters on dynamic moment of inertia and electric...

The probing of aligned and oriented molecules or atoms by electric quadrupole and magnetic dipole transitions is described using the spherical tensor formalism. The case of cylindrical symmetry is treated explicitly. It is shown how moments of t h e initial angular momentum distribution up to rank 4 are obtainable using electric quadrupole radiation. The interference between electric quadrupole...

The transition from order to chaos in atomic nuclei has been studied analytically and numerically using a quadrupole–quadrupole residual interaction. This interaction leads to chaotic behaviour, but the critical energy E C ≃ 12.6 MeV, corresponding to the onset of chaos, is higher than that of the experimental one.

We carry out a study of the study of the Q · Q interaction in a model space which consists of several nucleons in an open shell and all 2¯ hω excitations. Xo 2 Q · Q, where for t=1 we get the 'accepted strength'. In the 0p space, the spectrum would scale with t. In this space, the 2 + 1 and 2 + 2 states of 10 Be are degenerate, as are the [330] and [411] sets of J = 0 + , 1 + and 2 + triplets. ...

Abstract. We present recent investigations on dipole and quadrupole excitations in spherical skin nuclei, particular exploring their connection to the thickness of the neutron skin. Our theoretical method relies on density functional theory, which provides us with a proper link between nuclear many-body theory of the nuclear ground state and its phenomenological description. For the calculation...

Information on the intrinsic deformation of the proton can be obtained by studying the electromagnetic p → ∆+ quadrupole transition. Recent experiments have shown that the electric quadrupole (E2) strength in γp → ∆+ is about 10 times larger than predicted by the simple quark model using only one-body currents. Our analysis provides evidence for the dominance of exchange currents in the N → ∆ q...