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α发射数可作为提取同位旋相关平均场的灵敏探针

郭文军 郭双鹤 孙长安

郭文军, 郭双鹤, 孙长安. α发射数可作为提取同位旋相关平均场的灵敏探针[J]. 原子核物理评论, 2010, 27(3): 263-266. doi: 10.11804/NuclPhysRev.27.03.263
引用本文: 郭文军, 郭双鹤, 孙长安. α发射数可作为提取同位旋相关平均场的灵敏探针[J]. 原子核物理评论, 2010, 27(3): 263-266. doi: 10.11804/NuclPhysRev.27.03.263
GUO Wen-jun, GUO Shuang-he, SUN Chang-an. Number of α Emitted as a Probe of the Isospin Dependent Mean field[J]. Nuclear Physics Review, 2010, 27(3): 263-266. doi: 10.11804/NuclPhysRev.27.03.263
Citation: GUO Wen-jun, GUO Shuang-he, SUN Chang-an. Number of α Emitted as a Probe of the Isospin Dependent Mean field[J]. Nuclear Physics Review, 2010, 27(3): 263-266. doi: 10.11804/NuclPhysRev.27.03.263

α发射数可作为提取同位旋相关平均场的灵敏探针

doi: 10.11804/NuclPhysRev.27.03.263

Number of α Emitted as a Probe of the Isospin Dependent Mean field

  • 摘要: 利用同位旋相关的量子分子动力学, 对中能重离子碰撞过程中的α发射数的同位旋效应进行了分析。 研究表明, α发射数强烈地依赖于同位旋相关平均场的影响, 而与同位旋相关核子核子碰撞截面的依赖较弱, 可以作为提取同位旋相关平均场信息的灵敏探针。 由于实验上α粒子发射数的观测比较容易, 而且在很宽地能量范围内, 无论丰中子系统还是缺中子系统都较好地满足上述规律, 这样就可以通过实验上对α发射数的探测, 来提取介质中同位旋相关平均场的信息。 同时建议由实验对缺中子系统的质子发射数进行探测, 从中提取同位旋相关核子核子碰撞截面的信息。 The α emissions in heavyion collisions at intermediate energies are studied by using isospindependent quantum molecular dynamics model. The number of α emitted is found to be strongly dependent on the isospindependent meanfield and weakly on the nucleonnucleon cross sections. The number of α emitted is easy to be measured in experiment and the above conclusion is still available no matter in neutronrich systems or in neutrondeficient systems in a wide energy region, so it can be used as an excellent probe for extracting information of the isospindependent meanfield. After several years searching, some information of the isospin asymmetry equation of state has been obtained in theoretically. We suggest to investigate the number of α emitted in neutronrich systems and the number of proton emitted in neutrondeficient systems experimentally to obtain more information of the isospindependent meanfield and the isospindependent nucleonnucleon cross section.
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  • 收稿日期:  1900-01-01
  • 修回日期:  1900-01-01
  • 刊出日期:  2010-09-20

α发射数可作为提取同位旋相关平均场的灵敏探针

doi: 10.11804/NuclPhysRev.27.03.263

摘要: 利用同位旋相关的量子分子动力学, 对中能重离子碰撞过程中的α发射数的同位旋效应进行了分析。 研究表明, α发射数强烈地依赖于同位旋相关平均场的影响, 而与同位旋相关核子核子碰撞截面的依赖较弱, 可以作为提取同位旋相关平均场信息的灵敏探针。 由于实验上α粒子发射数的观测比较容易, 而且在很宽地能量范围内, 无论丰中子系统还是缺中子系统都较好地满足上述规律, 这样就可以通过实验上对α发射数的探测, 来提取介质中同位旋相关平均场的信息。 同时建议由实验对缺中子系统的质子发射数进行探测, 从中提取同位旋相关核子核子碰撞截面的信息。 The α emissions in heavyion collisions at intermediate energies are studied by using isospindependent quantum molecular dynamics model. The number of α emitted is found to be strongly dependent on the isospindependent meanfield and weakly on the nucleonnucleon cross sections. The number of α emitted is easy to be measured in experiment and the above conclusion is still available no matter in neutronrich systems or in neutrondeficient systems in a wide energy region, so it can be used as an excellent probe for extracting information of the isospindependent meanfield. After several years searching, some information of the isospin asymmetry equation of state has been obtained in theoretically. We suggest to investigate the number of α emitted in neutronrich systems and the number of proton emitted in neutrondeficient systems experimentally to obtain more information of the isospindependent meanfield and the isospindependent nucleonnucleon cross section.

English Abstract

郭文军, 郭双鹤, 孙长安. α发射数可作为提取同位旋相关平均场的灵敏探针[J]. 原子核物理评论, 2010, 27(3): 263-266. doi: 10.11804/NuclPhysRev.27.03.263
引用本文: 郭文军, 郭双鹤, 孙长安. α发射数可作为提取同位旋相关平均场的灵敏探针[J]. 原子核物理评论, 2010, 27(3): 263-266. doi: 10.11804/NuclPhysRev.27.03.263
GUO Wen-jun, GUO Shuang-he, SUN Chang-an. Number of α Emitted as a Probe of the Isospin Dependent Mean field[J]. Nuclear Physics Review, 2010, 27(3): 263-266. doi: 10.11804/NuclPhysRev.27.03.263
Citation: GUO Wen-jun, GUO Shuang-he, SUN Chang-an. Number of α Emitted as a Probe of the Isospin Dependent Mean field[J]. Nuclear Physics Review, 2010, 27(3): 263-266. doi: 10.11804/NuclPhysRev.27.03.263

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