Four alpha correlations in nuclear fragmentation: a game of resonances
Four alpha correlations in nuclear fragmentation: a game of resonances
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核碎片中的四种 α 相关性：共振游戏
DOI：
10.1088/1674-1137/abce52
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发表时间：
2021
影响因子：
3.6
通讯作者：
Yennello S. J.
中科院分区：
文献类型：
--
作者：
Huang M.;Bonasera A.;Zhang S.;Zheng H.;Wang D. X.;Wang J. C.;Song N.;Tang X.;Lu L.;Zhang G.;Kohley Z.;Rodrigues M. R. D.;Ma Y. G.;Yennello S. J.
费米能附近的重离子碰撞会产生一个“冻结”区域，在那里出现碎片，然后衰变，主要发射中子、质子、α粒子和伽马射线。这些衰变产物携带着关于衰变原子核的信息。碎裂事件可能导致玻色子粒子，特别是α粒子的高产率，并且可能携带关于核玻色爱因斯坦凝聚体（BEC）的重要信息。我们研究了“介质中”的四种α关联，并将它们与16 O在两个基态的8 Be或12 C*（Hoyle态）+ α中的“裂变”联系起来.使用新的技术的相关函数，我们确认的共振16 O在15.2 MeV的激发能量，和一个较低的共振，接近14.72 MeV的可能性。后一种共振是所有相对动能为92 keV的α粒子的结果。
Heavy ion collisions near the Fermi energy produce a'freezout'region where fragments appear and later decay, emitting mainly neutrons, protons, alpha particles, and gamma rays. These decay products carry information about the decaying nuclei. Fragmentation events may result in high yields of boson particles, especially alpha particles, and may carry important information about the nuclear Bose Einstein condensate (BEC). We study'in medium'four α correlations and link them to the'fission'of 16 O in two 8 Be in the ground state or 12 C*(Hoyle state)+ α. Using novel techniques for the correlation functions, we confirm the resonance of 16 O at 15.2 MeV excitation energy, and the possibility of a lower resonance, close to 14.72 MeV. The latter resonance is the result of all α particles having 92 keV relative kinetic energies.