共振O17+α弹性散射首次测量中Ne21中α-团簇结构的证据

IF 3.2 2区物理与天体物理 Q2 PHYSICS, NUCLEAR

Physical Review C Pub Date : 2019-05-04 DOI:10.1103/physrevc.100.062802

A. Nurmukhanbetova, V. Goldberg, D. Nauruzbayev, M. Golovkov, A. Volya

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引用次数: 2

摘要

采用厚靶逆运动学方法首次研究了O17+α弹性散射中的共振现象。数据在r -矩阵方法的框架内进行分析。在9-13 MeV激发能的Ne21激发区发现了许多α-簇态，其中包括在奇偶核中首次观察到宽的l=0态，这可能是Ne20中8 MeV时宽的0+态的类似物。Ne21中观测到的结构与Ne20中O16+α共振散射的结构惊人地相似。这一结果也有助于改进O17(α，n)反应的数据，这对天体物理学很重要。

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Evidence for α -cluster structure in Ne21 in the first measurement of resonant O17+α elastic scattering

The first study of resonances in O17+α elastic scattering was carried out using the thick target inverse kinematics method. The data were analyzed in the framework of an R-matrix approach. Many α-cluster states were found in the Ne21 excitation region of the 9–13 MeV excitation energy including the first observation of a broad l=0 state in an odd-even nucleus, which is likely the analog of the broad 0+ at 8 MeV in Ne20. The observed structure in Ne21 appeared to be strikingly similar to that populated in the resonant O16+α scattering in Ne20. The results are also useful for refinement of data on an O17(α,n) reaction important for astrophysics.

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来源期刊

Physical Review C PHYSICS, NUCLEAR-

CiteScore

5.80

自引率

35.50%

发文量

863

期刊介绍： Physical Review C (PRC) is a leading journal in theoretical and experimental nuclear physics, publishing more than two-thirds of the research literature in the field. PRC covers experimental and theoretical results in all aspects of nuclear physics, including: Nucleon-nucleon interaction, few-body systems Nuclear structure Nuclear reactions Relativistic nuclear collisions Hadronic physics and QCD Electroweak interaction, symmetries Nuclear astrophysics