This study focusses on identification and analysis of possible isotopes of the superheavy element Roentgenium (Z = 111) by studying competition between the decay modes of the 259-300 Rg isotopes. It is also parameterized an equation for the fusion barrier height and position. After this we have also identified the possible projectile-target combinations to synthesize 268-279 Rg by studying compound nucleus formation probability, survival probability, and evaporation residue cross sections. The selected projectile-target combinations to synthesize the superheavy element Z = 111 with the combinations are 58 Ni+ 210 Bi, 59,60 Co+ 210 Po, 35,36 Cl+ 236 Pu, 35 Cl+ 239-242 Pu, 36 Cl+ 238,242,244 Pu. The present work is compared with the experimental values available in literature.

中文翻译：

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Roentgenium的合成及衰变特性研究

本研究的重点是通过研究 259-300 Rg 同位素衰变模式之间的竞争，识别和分析超重元素铊鎓 (Z = 111) 的可能同位素。它还参数化了融合障碍高度和位置的方程。在此之后，我们还通过研究复合核形成概率、存活概率和蒸发残留物横截面，确定了可能的弹丸-目标组合以合成 268-279 Rg。合成超重元素 Z = 111 的所选弹靶组合为 58 Ni+ 210 Bi, 59,60 Co+ 210 Po, 35,36 Cl+ 236 Pu, 35 Cl+ 239-242 Pu, 36 Cl+ 238,242,24 目前的工作与文献中可用的实验值进行了比较。