Analysis of the fusion mechanism in the synthesis of superheavy element 119 via the Cr54+Am243 reaction

A new dynamical mechanism of incomplete fusion in heavy-ion collision

“…The potential energy surface (PES) presented in Fig. 2 is calculated as a sum of the nucleus-nucleus interaction V and reaction energy balance Q gg [12]:…”

“…The driving potential of the DNS formed in the 16 symmetry axis of the deformed nuclei to the beam direction, respectively. In case of the nuclei with at spherical shape at their ground state, the change in their shape due to surface vibration at the zero-point motion is considered [12]. The amplitudes of vibrations are taken equal to the values of the deformation parameters of the first quadrupole 2 + and octupole 3 − collective excitations of nuclei (β +…”

“…The transition coefficients of the transport master equation depend on the energy, spin, and occupation numbers of the single-particle states of the nucleons in the DNS fragments (see Refs. [12,18] for details). The occupation numbers of nucleons in the DNS fragments depend on T Z .…”

“…and L allows us to find the partial cross sections of the incomplete fusion as a very mass asymmetric channel of the quasifission process by the following expression: (6) where σ cap (E lab , L) = πλ −2 P cap (E lab , L), where λ −2 is the de Broglie wavelength corresponding to the collision energy E lab and P cap is the capture probability which is found from the calculation of the collision trajectory for the given values of E c.m. and orbital angular momentum L [12].…”

“…The ER cross sections of the xn channels of the incomplete fusion accompanied with the emission of the α particle have been calculated in the framework of the DNS model [12]. We should note that the excitation energy of the conjugate nucleus after emission of α particle is…”