Triple alpha-particle resonances in the decay of hot nuclear systems
Triple alpha-particle resonances in the decay of hot nuclear systems
复制标题
热核系统衰变中的三重α粒子共振
DOI：
10.1088/1674-1137/43/6/064102
复制
发表时间：
2019
影响因子：
3.6
通讯作者：
Yennello S J
中科院分区：
文献类型：
--
作者：
Zhang S;Wang J C;Bonasera A;Huang M R;Zheng H;Zhang G Q;Kohley Z;Ma Y G;Yennello S J
本文通过对能量为35 MeV/核子的70（64）Zn（64 Ni）+ 70（64）Zn（64 Ni）反应的实验数据的分析，讨论了激发态12 C核中尚未观测到的Efimov（托马斯）三聚体。在重离子碰撞中，{\alpha}s相互作用，可以形成复杂的系统，如8 Be和12 C。对于3{\alpha}系统，多重共振过程产生12 C的激发态。3个{\alpha}粒子中的任何两个之间的相互作用都会产生一个、两个或三个8 Be的事件。在最小相对能量分布中可以清楚地看到它们的干扰水平。在重建的7.458 MeV激发能（12 C）处，观测到与8 Be基态一致的三对相对能量的事件，并减小了仪器误差，该激发能被认为是Efimov（托马斯）态.
The Efimov (Thomas) trimers in excited 12 C nuclei, for which no observation exists yet, are discussed by means of analyzing the experimental data of 70(64) Zn( 64 Ni) + 70(64) Zn( 64 Ni) reactions at beam energy of E/A=35MeV/nucleon. In heavy ion collisions, the {\alpha}s interact with each other and can form complex systems such as 8 Be and 12 C. For the 3{\alpha} systems, multi resonance processes give rise to excited levels of 12 C. The interaction between any two of the 3{\alpha} particles provides events with one, two or three 8 Be. Their interfering levels are clearly seen in the minimum relative energy distributions. Events of three couple {\alpha} relative energies consistent with the ground state of 8 Be are observed with the decrease of the instrumental error at the reconstructed 7.458 MeV excitation energy of 12C, which was suggested as the Efimov (Thomas) state.