Hexadecapole interaction and the △I=4 staggering effect in rotational bands

نویسنده

  • K. Burzyński
چکیده

A role of the multipole interaction in the description of the △I=4 staggering phenomenon is investigated in a model consisting of a single-j shell filled by identical nucleons. Exact diagonalization of the quadrupole-plushexadecapole Hamiltonian shows that the hexadecapole-hexadecapole interaction can produce a △I=4 periodicity in the yrast sequence. PACS numbers: 21.10.Re, 21.30.+y, 21.60.Cs

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The ∆I=4 bifurcation in superdeformed bands

The origin of the ∆I=4 staggering effect which has recently been observed in several su-perdeformed bands is discussed. The Hamamoto and Mottelson model, which is based on a phenomenological parametrization of the hamiltonian as a quartic function of angular momentum , is analyzed. A stability of the description with respect to the C 4-symmetry breaking terms is studied. Recently, a puzzling ne...

متن کامل

ar X iv : n uc l - th / 9 60 70 30 v 1 1 6 Ju l 1 99 6 Analysis of ∆ I = 2 Staggering in Nuclear Rotational Spectra

A method is proposed and tested for the analysis of ∆I = 2 staggering observed in nuclear rotational bands. We examine six super-and hyper-deformed bands, among which that of 149 Gd and possibly of 147 Gd seem to exhibit real staggering. However, we emphasize that the presence of staggering may not necessarily imply the occurrence of bifurcation. It is also shown that a similar staggering seen ...

متن کامل

On the Staggering Effect of Dynamical Moments of Inertia in Superdeformed Bands

The possibility of the appearance of the C4 symmetry in the rotational bands is studied within the particle-rotor model. The role of the triaxiality of the rotor is analized.

متن کامل

Complex band interactions in 170

Inelastic excitation of Er by a U beam, studied at near-barrier energies, has led to the observation of unusual features in rotational bands built on low-lying vibrations. The population of the high-spin members of the K50, b-vibrational band is enhanced due to mixing with the K52, g-vibrational band at spin 4. Strong mixing of the K50 band with a rotationally aligned 2 qp band results in this ...

متن کامل

Parity shift and beat staggering structure of octupole bands in a collective model for quadrupole–octupole deformed nuclei

We propose a collective model formalism which describes the strong parity shift observed in low-lying spectra of nuclei with octupole deformations together with the fine rotational band structure developed at higher angular momenta. The parity effect is obtained by the Schrödinger equation for oscillations of the reflection asymmetric (octupole) shape between two opposite orientations in an ang...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1994