Possibility of synthesizing Z=119 superheavy nuclei with Z>20 projectiles

We employ the dinuclear system(DNS)model combined with a statistical model to calculate the evaporation residue cross sections of the reaction systems ^(48)Ca+^(243)Am,^(48)Ca+^(248)Cm,and ^(48)Ca+^(249)Bk.The theoretical results successfully reproduce the experimental trends in the 3n and 4n evaporation channels of these reaction systems.To synthesize the new element,we predict the evaporation residue cross sections for three reaction systems(^(54)Cr+^(243)Am,^(51)V+^(248)Cm,and ^(50)Ti+^(249)Bk)to select the most promising projectile-target combinations.We also note that the maximum cross sections predicted by our model and other methods appear to be below the detection limits of current experimental facilities,given the projectile-target combinations feasible under current experimental conditions.Therefore,synthesizing superheavy nuclei with Z=119 will require improvements in beam intensity,detection techniques,and effective separation methods.