A study of the reactions14C(→d, d′)14C and 14C(→d, p)15C at 16.0 MeV
A study of the reactions14C(→d, d′)14C and 14C(→d, p)15C at 16.0 MeV
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16.0 MeV 下 14C(→d, d′)14C 和 14C(→d, p)15C 反应的研究
DOI：
10.1016/0375-9474(94)90797-8
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
S. Darden
中科院分区：
文献类型：
--
作者：
G. Murillo;S. Sen;S. Darden
在E[sub d]=16 MeV下，对[sup 14]C（d，d[sup prime）]和[sup 14]C（d，p）反应进行了截面和矢量分析功率测量。的非弹性散射数据进行了分析，使用DWBA与集体和微观模型的形状因子，也通过使用耦合通道形式主义与振动模型的形状因子。我们观察到，虽然在E[sub x]=7.012和8.318 MeV的两个2[sup +]态的截面角分布数据非常相似，但相应的矢量分析能力却截然不同。分析结果表明，这种独特的特征可能是由于质子和中子成分在跃迁振幅中的相对重要性不同而引起的。在E[sub x]=6.728 MeV的3[sup -]态被确定为主要是1 p-3 h态。虽然变形参数相对较大，但单颗粒结构方面在填充非弹性状态中比通道耦合效应发挥更主导的作用。已使用DWBA的结合和未结合状态的转移反应数据进行了分析。通过耦合反应通道计算研究了两步过程的重要性。G. S。在[sup 15]C中激发能为0.770、3.103和4.78 MeV的态主要由一步过程填充，在3.103 MeV态的情况下，具有小的两步贡献。4.22 MeV状态主要由两步过程填充。在早期的报告中，4.78和5.83 MeV的状态分别被确定为1 p-2 h和3 p-4 h，[l brace]3[r brace]/[l brace]2[r brace][sup +]状态。通过（d，p）反应布居的[sup 15]C和[sup 17]O态在能级结构和反应机理上有着密切的相似性。（（orig.））
Cross-section and vector-analyzing-power measurements for [sup 14]C(d, d[sup prime)] and [sup 14]C(d, p) reactions have been carried out for E[sub d]=16 MeV. The inelastic-scattering data have been analyzed using the DWBA with a collective and a microscopic model form-factor and also by using the coupled-channels formalism with a vibrational model form-factor. It is observed that while the cross-section angular-distribution data for the two 2[sup +] states at E[sub x]=7.012 and 8.318 MeV are very similar, the corresponding vector analyzing powers are quite different. The results of the analyses indicate that the distinctive characteristics probably arise from the difference in the relative importance of the proton and neutron components in the transition amplitude. The 3[sup -] state at E[sub x]=6.728 MeV is identified as predominantly a 1p-3h state. Although the deformation parameters are relatively large, the single-particle structure aspects play a more dominant role than channel-coupling effects in populating the inelastic states. The transfer reaction data have been analyzed using the DWBA for bound and unbound states. The importance of two-step processes has been investigated via coupled-reaction-channels calculations. The g.s. and the states with excitation energies 0.770, 3.103 and 4.78 MeV in [sup 15]C are populated primarily by a one-step process with a small two-step contribution in the case of the 3.103 MeV state. The 4.22 MeV state is populated predominantly by two-step processes. The 4.78 and the 5.83 MeV states have been identified as 1p-2h and 3p-4h, [l brace]3[r brace]/[l brace]2[r brace][sup +] state, respectively, in an earlier report. There is close similarity in the level structures and reaction mechanisms between the states of [sup 15]C and [sup 17]O populated via the (d, p) reaction. ((orig.))