Influence of entrance channel on production cross sections of superheavy nuclei

2017 ◽  
Vol 96 (2) ◽  
Author(s):  
Xiao Jun Bao ◽  
Shu Qing Guo ◽  
Hong Fei Zhang ◽  
Jun Qing Li
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Entrance Channel ◽  
Superheavy Nuclei

Entrance Channel Dependence of Production Cross Sections of Superheavy Nuclei in Cold Fusion Reactions

2005 ◽  
Vol 22 (4) ◽  
pp. 846-849 ◽  
Author(s):  
Feng Zhao-Qing ◽  
Jin Gen-Ming ◽  
Fu Fen ◽  
Zhang Feng-Shou ◽  
Jia Fei ◽  
...  
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Cold Fusion ◽  
Entrance Channel ◽  
Superheavy Nuclei ◽  
Fusion Reactions

SHELL CORRECTION ENERGY AND THE ENTRANCE CHANNEL EFFECT ON THE FORMATION OF SUPERHEAVY NUCLEI

2008 ◽  
Vol 17 (supp01) ◽  
pp. 80-96 ◽  
Author(s):  
BAO-AN BIAN ◽  
FENG-SHOU ZHANG ◽  
SAI-SAI DU
Keyword(s):  
Compound Nucleus ◽  
Cross Sections ◽  
Entrance Channel ◽  
Shell Correction ◽  
Superheavy Nuclei ◽  
Nucleus Formation ◽  
Mass Asymmetry ◽  
Compound Nucleus Formation ◽  
The One ◽  
Shell Correction Energy

Based on the improved isospin dependent molecular dynamics model in which the shell correction energy of the system is calculated by using deformed two-center shell model and the surface energy of the system is improved by introducing a switch function that combines the surface energies of projectile and target with the one of the compound nucleus. The effects of the shell correction energy on synthesis of superheavy nuclei and the fusion cross sections in asymmetric and nearly symmetric reaction systems leading to the same compound nuclei 62 Zn , 76 Kr , and 202 Pb are studied. The entrance channel mass asymmetry dependence of compound nucleus formation is found by analyzing the shell correction energies, Coulomb barriers and fusion cross sections. The experimental data are described quantitatively by the present model. It is found that the compound nucleus formation is favorable for the systems with larger mass asymmetry.

Production cross-sections of superheavy elements using nearly double magic nuclei as projectile

2017 ◽  
Vol 26 (07) ◽  
pp. 1750050
Author(s):  
Ahmad Ansari ◽  
Nader Ghahramany
Keyword(s):  
Experimental Data ◽  
Cross Sections ◽  
Production Cross ◽  
Evaporation Residue ◽  
Fission Barrier ◽  
Superheavy Nuclei ◽  
New Approach ◽  
Barrier Heights ◽  
Compound Nucleus Formation ◽  
Good Agreement

In our new approach, evaporation residue cross-sections for new superheavy nuclei with atomic numbers [Formula: see text] are estimated by calculation of vital characteristics of superheavy nuclei synthesis such as the fission barrier height, the compound nucleus formation probability and the survival probability of the residue nuclei. Our presented estimation is in good agreement with available experimental data. In addition, this new approach allowed us to predict the evaporation residue cross-sections for superheavy nuclei with [Formula: see text] and 120 via introducing synthesis box and compare our results with other models. It is shown that the fission barrier heights of two nuclei with [Formula: see text] and 120 are comparable with their corresponding neutron separation energies. It is suggested that for the synthesis of new superheavy nuclei, it is proper to use nearly double magic nuclei such as [Formula: see text] as our projectile, so that the fission barrier heights remain high.

ENTRANCE CHANNEL EFFECT AND FUSION CROSS SECTIONS IN THE SYNTHESIS OF HEAVY AND SUPERHEAVY NUCLEI

2010 ◽  
Vol 19 (08n09) ◽  
pp. 1603-1615
Author(s):  
SAI-SAI DU ◽  
FENG-SHOU ZHANG
Keyword(s):  
Cross Sections ◽  
Nuclear Reactions ◽  
Large Mass ◽  
Entrance Channel ◽  
Superheavy Nuclei ◽  
Fusion Reactions ◽  
Combined System ◽  
Mass Asymmetry ◽  
Channel Effect ◽  
Heavy And Superheavy Nuclei

The entrance channel effect, mainly involved the mass asymmetry, the neutron-excess and the collision orientation of the combined system, are presented by summarizing the recent theoretical results about the fusion reactions leading to the same compound nuclei and the neutron-rich fusion reactions in the synthesis of heavy and superheavy nuclei through various models. It is concluded that the system with large mass asymmetry and neutron-rich nuclear reactions is favorable for the compound nucleus formation.

Production cross sections of superheavy nuclei based on dinuclear system model

2006 ◽  
Vol 771 ◽  
pp. 50-67 ◽  
Author(s):  
Zhao-Qing Feng ◽  
Gen-Ming Jin ◽  
Fen Fu ◽  
Jun-Qing Li
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
System Model ◽  
Superheavy Nuclei ◽  
Dinuclear System
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