Production mechanism of neutron-rich nuclei around N =126 in the multi-nucleon transfer reaction 132Sn+208Pb
Production mechanism of neutron-rich nuclei around N =126 in the multi-nucleon transfer reaction 132Sn+208Pb
复制标题
多核转移反应132Sn 208Pb中N=126附近富中子核的生成机理
DOI：
10.1088/1674-1137/42/10/104105
复制
发表时间：
2018
影响因子：
3.6
通讯作者：
王楠
中科院分区：
文献类型：
--
作者：
蒋翔;王楠
用三维含时Hartree-Fock方法研究了库仑势垒以上不同入射能量下的多核子转移反应。用粒子数投影法计算了不同传输通道的概率。结果表明，中子剥离(从弹丸转移到靶)和质子拾取(从靶转移到弹丸)是有利的。通过使用最先进的统计代码Gemini++来处理初级碎片的去激发。研究了类靶碎片(Z=77~Z=87)的初级和最终产物截面。结果表明，重核的裂变衰变在Z>；82核的去激发过程中起着重要作用。研究还发现，富中子核的最终产生截面仅轻微地依赖于入射能量，而贫中子核的最终产生截面强烈地依赖于入射能量。
The time-dependent Hartree-Fock approach in three dimensions is employed to study the multi-nucleon transfer reaction 132 Sn+ 208 Pb at various incident energies above the Coulomb barrier. Probabilities for different transfer channels are calculated by using the particle-number projection method. The results indicate that neutron stripping (transfer from the projectile to the target) and proton pick-up (transfer from the target to the projectile) are favored. De-excitation of the primary fragments is treated by using the state-of-art statistical code GEMINI++. Primary and final production cross sections of the target-like fragments (with Z= 77 to Z= 87) are investigated. The results reveal that fission decay of heavy nuclei plays an important role in the de-excitation process of nuclei with Z> 82. It is also found that the final production cross sections of neutron-rich nuclei depend only slightly on the incident energy, while those of neutron-deficient nuclei depend strongly on the incident energy.