2012, Vol.15, No.1, pp.1-22
Using the three-parameter expression of Harris expansion for the
rotational energy, the dynamic moment of inertia is represented by a power-series expansion in
even powers of the rotational frequency
. The
three expansion coefficients were determined using Marquardt
method of nonlinear least-squares routines to fit the proposed
dynamical moment of inertia with its recent experimental data for
the superdeformed (SD) nuclei in the A
100-140 mass region.
The calculated dynamical moment of inertia with the best
parameters is then integrated to obtain the spin, which in turn
was used to determine the static moment of inertia. The comparison
of the dynamic moment of inertia and spin with their available
experimental data shows good agreements between them. These
procedures were succeedingly done for 15 superdeformed bands in
the A
100-140 nuclei; namely, 104Pd(b1),
132Ce(b1), 134Nd(b1), 136Nd(b2), 142Sm(b1),
148Eu(b1, b2), 131Ce(b1, b2), 133Ce(b1, b2),
133Pr(b1, b3), 137Sm(b1), 143Eu(b1).
Key words:
superdeformed nuclei, even-A and odd-A nuclei of the
superdeformed mass region 100-140, Harris three-parameter formula
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