标题： 通过核子转移增强的势垒下重离子融合以及远离β稳定线核的势垒下融合 显示英文标题

标题： Subbarrier heavy ion fusion enhanced by nucleon transfer and subbarrier fusion of nuclei far from the line of β-stability

摘要： 我们讨论一个用于描述重离子低能垒融合的模型，该模型考虑了与低能表面振动态的耦合以及任意反应Q值的少量核子转移。 融合反应 ^{28,30}Si+^{58,62,64}Ni, ^{40}Ca+^{90,96}Zr, ^{28}S+^{94,100}Mo, ^{16,18,20,22,24}O+^{58}Ni 和 ^{28}Si+^{124,126,128,130,132}Sn 被详细分析。 该模型很好地描述了接近\beta 稳定线的核反应的实验融合截面和平均角动量。 显示这些量由于具有大正Q值的少量核子转移而显著增强。 提出了在接触点距离小于处的重离子势的与形状无关的参数化方法。 显示英文摘要

摘要： We discuss a model for the description of subbarrier fusion of heavy ions which takes into account the coupling to the low-energy surface vibrational states and to the few-nucleon transfer with arbitrary reaction Q-value. The fusion reactions ^{28,30}Si+^{58,62,64}Ni, ^{40}Ca+^{90,96}Zr, ^{28}S+^{94,100}Mo, ^{16,18,20,22,24}O+^{58}Ni and ^{28}Si+^{124,126,128,130,132}Sn are analyzed in detail. The model describes rather well the experimental fusion cross section and mean angular momentum for reactions between nuclei near the \beta-stability line. It is shown that these quantities are significantly enhanced by few-nucleon transfer with large positive Q-value. A shape independent parameterization of the heavy ion potential at distances smaller then the touching point is proposed.