Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2010-03-05
Phys.Rev.C81:034320,2010
Physics
Nuclear Physics
Nuclear Theory
8 pages, 5 figures
Scientific paper
10.1103/PhysRevC.81.034320
The model, introduced in a previous paper, for the description of the octupole and quadrupole degrees of freedom in conditions close to the axial symmetry, is used to describe the negative-parity band based on the first octupole vibrational state in nuclei close to the critical point of the U(5) to SU(3) phase transition. The situation of 150Nd and 152Sm is discussed in detail. The positive parity levels of these nuclei, and also the in-band E2 transitions, are reasonably accounted for by the X(5) model. With simple assumptions on the nature of the octupole vibrations, it is possible to describe, with comparable accuracy, also the negative parity sector, without changing the description of the positive-parity part.
Bizzeti P. G.
Bizzeti-Sona A. M.
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