In DNS model, a key point is the calculation of PES because it governs the fusion dynamics and thus determines the optimum excitation energy of the compound nucleus and the optimum bombarding energy. Furthermore, it g...In DNS model, a key point is the calculation of PES because it governs the fusion dynamics and thus determines the optimum excitation energy of the compound nucleus and the optimum bombarding energy. Furthermore, it gives the information about the optimum projectile-target combination leading to a certain super-heavy nucleus.展开更多
To synthesize new superheavy nuclei a better understanding of the physics conception on the production mechanism is very important. Several theoretical models have been developed to describe the reaction dynamical mec...To synthesize new superheavy nuclei a better understanding of the physics conception on the production mechanism is very important. Several theoretical models have been developed to describe the reaction dynamical mechanism. Among them Adamian et al.have investigated the reaction mechanism of the superheavy element (SHE) formation in the concept of a dinuclear system (DNS) which is proved to be a powerful tool展开更多
So far super heavy elements are synthesized by cold fusion of heavy ions with Pb and Bi targets, or hot fusion reaction using 232Th, 238U and 242>244Pu targets. Further heavier synthesizing could be very difficult....So far super heavy elements are synthesized by cold fusion of heavy ions with Pb and Bi targets, or hot fusion reaction using 232Th, 238U and 242>244Pu targets. Further heavier synthesizing could be very difficult. The study of the fusion mechanism will hopefully propose optimal experimental conditions for the formation of the super heavy elements.展开更多
The survival probability of the excited compound nucleus is considered as one of the crucial factors for producing SHE. The competition between the neutron emission and the fission during the de-excitation process is ...The survival probability of the excited compound nucleus is considered as one of the crucial factors for producing SHE. The competition between the neutron emission and the fission during the de-excitation process is the main mechanism to determine the survival probability. The form of level density formula, the level展开更多
文摘In DNS model, a key point is the calculation of PES because it governs the fusion dynamics and thus determines the optimum excitation energy of the compound nucleus and the optimum bombarding energy. Furthermore, it gives the information about the optimum projectile-target combination leading to a certain super-heavy nucleus.
文摘To synthesize new superheavy nuclei a better understanding of the physics conception on the production mechanism is very important. Several theoretical models have been developed to describe the reaction dynamical mechanism. Among them Adamian et al.have investigated the reaction mechanism of the superheavy element (SHE) formation in the concept of a dinuclear system (DNS) which is proved to be a powerful tool
文摘So far super heavy elements are synthesized by cold fusion of heavy ions with Pb and Bi targets, or hot fusion reaction using 232Th, 238U and 242>244Pu targets. Further heavier synthesizing could be very difficult. The study of the fusion mechanism will hopefully propose optimal experimental conditions for the formation of the super heavy elements.
文摘The survival probability of the excited compound nucleus is considered as one of the crucial factors for producing SHE. The competition between the neutron emission and the fission during the de-excitation process is the main mechanism to determine the survival probability. The form of level density formula, the level
