Charge distribution studies in the epi-cadmium neutron induced fission of 245Cm

초록

Fractional cumulative yields (FCY) and independent yields (IY) of various fission products in the epi-cadmium neutron induced fission of Cm-245 were measured for the first time by using an off-line gamma-ray spectrometric technique. From the FCY values, the isobaric width parameter (sigma(Z)), most probable charge (Z(P)) and the charge polarization (triangle Zeta(EXPT)) as a function of fragment mass were obtained. The triangle Zeta(MPE) values based on minimum potential energy surface were theoretically calculated. From the measured IY values, isotopic width parameter (sigma(A)), the most probable mass (A(P)) and the elemental yields (Y-Z) of Sn, Sb, Te, I, Xe, Cs, Ba, La, Ce and Pr were determined by using a non-linear fit. From the Y-Z values, the proton even-odd effect (delta(p)) was obtained for the first time. The isobaric and isotopic charge distribution parameters in the Cm-245(n(f), f) reaction were compared with the similar data in the thermal neutron induced fission of Cm-245 and other actinides to examine the role of excitation energy.

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