核虹与气象虹的相似性--核波纹的证据
Similarity between nuclear rainbow and meteorological rainbow -- evidence for nuclear ripples
摘要：
我们提出的核波纹叠加在艾里结构的核彩虹，这是类似的气象彩虹的证据。核波纹的形成机制也与气象彩虹相似，是由外反射波与折射波的干涉作用引起的。利用耦合道方法，考虑到$E_L$ C和$^{16}$ O的激发态与双折叠模型的耦合，分析了115.9MeV能量下$^{16}$ O+ $^{12}$ C彩虹散射的弹性角分布，证实了核波纹结构.与激发态的耦合起到产生外部反射的作用。
英文摘要：
We present evidence for the nuclear ripples superimposed on the Airy structure of the nuclear rainbow, which is similar to the meteorological rainbow. The mechanism of the nuclear ripples is also similar to that of the meteorological rainbow, which is caused by the interference between the externally reflective waves and refractive waves. The nuclear ripple structure was confirmed by analyzing the elastic angular distribution in $^{16}$O+$^{12}$C rainbow scattering at $E_L$=115.9 MeV using the coupled channels method by taking account of coupling to the excited states of $^{12}$C and $^{16}$O with a double folding model derived from a density-dependent effective nucleon-nucleon force with realistic wave functions for $^{12}$C and $^{16}$O. The coupling to the excited states plays the role of creating the external reflection.
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