Thermal quantities of 46Ti

Role of neutron and proton system in spin cut off parameter and entropy of 89,90Y

“…(11), (8) and (12), respectively. For more information on the calculation procedures see our previous publications [7][8][9][10]. Calculated nuclear level density for 89 Y in the BCS model as a function of excitation energy is shown in Fig.…”

“…There are different approaches for statistical calculations of nucleons system [10,12]. The usual procedure is to determine the grand canonical partition function for a system of fermions with conserved energy and the number of particles [13].…”

“…Comparison of extracted entropies in the BCS model shows that the 90 Y nucleus has an entropy excess compared to 89 Y at the temperatures below critical temperature. Critical temperature is the temperature at which gap parameter, that is a measure of nuclear pairing, becomes zero and the so-called phase transition between paired and unpaired systems occurs [9,10]. Also, an excess is observed in experimental level densities for 90 Y compared to 89 Y ( Fig.…”