期刊
PHYSICAL REVIEW C
卷 90, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.90.054605
关键词
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资金
- U.S. Department of Energy [DE-FG02-96ER40975]
- Vanderbilt University
- Australian Research Council [FT120100760]
- U.S. Department of Energy (DOE) [DE-FG02-96ER40975] Funding Source: U.S. Department of Energy (DOE)
Quasifission is the primary reaction mechanism that prevents the formation of superheavy elements in heavy-ion fusion experiments. Employing the time-dependent density functional theory approach, we study quasifission in the systems Ca-40,Ca-48+U-238. Results show that for Ca-48 projectiles the quasifission is substantially reduced in comparison to the Ca-40 case. This partly explains the success of superheavy element formation with Ca-48 beams. For the first time, we also calculate the repartition of excitation energies of the two fragments in a dynamic microscopic theory. The differences between both systems are interpreted in terms of initial neutron to proton asymmetry of the colliding partners.
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