To shed light on the conditions for synthesizing some new heavy neutron-rich nuclei using multinucleon transfer reactions, the reaction systems Ca40+Pb208, Ni58+Pb208, Ar40+Pb208, Ni64+Pb208, and Xe136+Pb208 are investigated within improved dinuclear system (DNS) model+gemini++. The transfer cross sections are calculated and compared with existing experimental data. The calculated results are in good agreement with available data. One found the projectiles are changed from the neutron-deficient Ca40 and Ni58 to moderately neutron-rich Ar40, and neutron-rich Ni64 and Xe136 projectiles on Pb208 target, the transfer flux its trend gradually evolves from proton stripping and neutron pickup to the proton pickup and neutron stripping and pickup (pickup and stripping are referring to the projectilelike fragment).

中文翻译：

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中子过剩在产生重中子富核的弹丸中的作用

为了阐明使用多核转移反应合成一些新的富中子重核的条件，在改进的双核系统中研究了反应体系 Ca40+Pb208、Ni58+Pb208、Ar40+Pb208、Ni64+Pb208 和 Xe136+Pb208（ DNS）模型+双子座++。计算传输截面并与现有的实验数据进行比较。计算结果与现有数据吻合良好。发现弹丸从缺乏中子的Ca40和Ni58变为中等富中子的Ar40，富中子Ni64和Xe136弹在Pb208靶上，其转移通量的趋势逐渐从质子剥离和中子拾取向质子拾取演变。和中子剥离和拾取（拾取和剥离是指弹丸状碎片）。