Calculation of the evaporation residue cross sections for the synthesis of the superheavy elementZ=119via the50Ti+2

Systematics of fusion probability in “hot” fusion reactions

“…One sees that for 50 Ti+ 249 Bk and 50 Ti+ 249 Cf the results from Ref. [10] with the fusionby-diffusion model and Ref. [34] with the dinuclear system model are in the same order of magnitude (hundreds of fb), while the results from Ref.…”

“…The most unclear part may be the value of P CN which is usually calculated by different models for the dynamics [10,12,13] based on the potential energy surface of the reaction system or by empirical formulas [12,20]. In Refs.…”

“…For the fusion reactions synthesizing element 120 with projectiles 54 Cr and 58 Fe, the cross sections fall to a few femtobarns which seems beyond the limit of the available facilities. * Electronic address: tianjunlong@gmail.com 1 Synthesis of super-heavy nuclei (SHN) through fusion reactions is a field of very intense studies in the recent decades [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Up to now, the superheavy elements Z = 107 ∼ 118 have already been synthesized [1][2][3][4][5][6] through "cold" fusion reactions that use lead or bismuth targets with appropriate projectiles following the emission of one or two neutrons from a "cold" compound system, or "hot" fusion reactions that use actinide targets from uranium to californium with beams of 48 Ca following the evaporation of 3 to 5 neutrons from a "hot" system.…”

Theoretical study of the synthesis of superheavy nuclei withZ=119and 120 in heavy-ion reactions with trans-uranium targets

“…Let's take the projectile-target combination 50 Ti+ 249 Bk as an example. The maximal σ ER varies from 35 [17], 50 [16], and up to 570 fb [15]. In this work, the production cross sections for the synthesis of the element In an attempt to synthesize SHN with Z = 120 using the projectile-target combination 58 Fe + 244 Pu, no decay chains consistent with fusion-evaporation reaction products were observed [5].…”

“…Using a dinuclear system (DNS) model, Feng et al calculated the cross sections of cold fusion reactions with isotopes of elements 119 and 120 as evaporation residues and the maximal σ ER was predicted to be about 0.03 pb and 0.09 pb for elements 119 and 120, respectively [7]. Hot fusion reactions with 50 Ti as the projectile were studied extensively by using the DNS models [8][9][10][11], the fusion by diffusion models [12][13][14][15], and some other models [16,17]. The optimal incident energy and the maximal σ ER from different models or with different parameters vary very much.…”