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تسجيل مستخدم جديدNuclear Level Density within Extended Superfluid Model with Collective State Enhancement
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For nuclear level densities, a modification of an enhanced generalized superfluid model with different collective state enhancement factors is studied. An effect of collective states on forming the temperature is taken into account. The ready-to-use tables for the asymptotic value of $a$-parameter of level density as well as for addition shift to excitation energy are prepared using the chi-square fit of the theoretical values of neutron resonance spacing and cumulative number of low-energy levels to experimental values. The systematics of these parameters as a function of mass number and neutron excess are obtained. The collective state effect on gamma-ray spectra and excitation functions of neutron-induced nuclear reactions is investigated by the use of EMPIRE 3.1 code with modified enhanced generalized superfluid model for nuclear level density.
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We present a probable experimental signature of collective enhancement in the nuclear level density (NLD) by measuring the neutron and the giant dipole resonance (GDR) $gamma$ rays emitted from the rare earth $^{169}$Tm compound nucleus populated at
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96 -
V.A. Plujko
, A.N. Gorbachenko (Taras Shevchenko National University;n Institute for Nuclear Research
, Kiev
2002
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