Shape analysis applied in heavy ion reactions near Fermi energy
Shape analysis applied in heavy ion reactions near Fermi energy
复制标题
形状分析应用于费米能附近的重离子反应
DOI：
10.1088/1361-6471/aa57d7
复制
发表时间：
2017-02
期刊：
影响因子：
--
通讯作者：
J. Wang
中科院分区：
文献类型：
--
作者：
S. Zhang;M. Huang;R. Wada;X. Liu;W. Lin;J. Wang
提出了一种新的方法来进行形状分析，并评估其在费米能量附近的重离子碰撞中的有效性。为了避免计算中形状参数值的错误，采用了一种测试粒子法，每个核子用n个测试粒子表示，类似于Boltzmann-Uehling-Uhlenbeck （BUU）计算。将该方法应用于反对称分子动力学模型所模拟的事件。当n = 100时，碎片的几何形状提取比较合理。在多重破碎过程中产生的所有碎片都观察到明显的变形。该方法还适用于动量分布的形状，用于事件分类。在动量情况下，特征值计算的误差比几何形状分析的误差要小得多，且有和没有测试粒子方法的结果基本一致，说明在中间重离子碰撞中，动量分布的形状分析可以用于没有测试粒子方法的事件分类。
A new method is proposed to perform shape analyses and to evaluate their validity in heavy ion collisions near the Fermi energy. In order to avoid erroneous values of shape parameters in the calculation, a test particle method is utilized in which each nucleon is represented by n test particles, similar to that used in the Boltzmann–Uehling–Uhlenbeck (BUU) calculations. The method is applied to the events simulated by an antisymmetrized molecular dynamics model. The geometrical shape of fragments is reasonably extracted when n = 100 is used. A significant deformation is observed for all fragments created in the multifragmentation process. The method is also applied to the shape of the momentum distribution for event classification. In the momentum case, the errors in the eigenvalue calculation become much smaller than those of the geometrical shape analysis and the results become similar between those with and without the test particle method, indicating that in intermediate heavy ion collisions the shape analysis of momentum distribution can be used for the event classification without the test particle method.
登录
查看更多内容
影响因子：
3.1
作者：
A. Ono;P. Danielewicz;W. Friedman;W. G. Lynch;M. Tsang
通讯作者：
A. Ono;P. Danielewicz;W. Friedman;W. G. Lynch;M. Tsang
影响因子：
8.6
作者：
A. Bonasera;Z. Chen;R. Wada;K. Hagel;J. Natowitz;P. Sahu;L. Qin;S. Kowalski;T. Keutgen;T. Materna;T. Nakagawa
通讯作者：
A. Bonasera;Z. Chen;R. Wada;K. Hagel;J. Natowitz;P. Sahu;L. Qin;S. Kowalski;T. Keutgen;T. Materna;T. Nakagawa
影响因子：
4.1
作者：
M. Papa;G. Giuliani;A. Bonasera
通讯作者：
M. Papa;G. Giuliani;A. Bonasera
DOI：
10.1103/physrevc.50.2017
发表时间：
1994-10
期刊：
Physical review. C, Nuclear physics
影响因子：
--
作者：
Hagel;Gonin;Wada;Natowitz;Haddad;Lou;Gui;Utley;Xiao;Li;Nebbia;Fabris;Prete;Ruiz;Drain;Chambon;Cheynis;Guinet;Hu;Demeyer;Pastor;Giorni;Llères;Stassi;Viano;Gonthier
通讯作者：
Hagel;Gonin;Wada;Natowitz;Haddad;Lou;Gui;Utley;Xiao;Li;Nebbia;Fabris;Prete;Ruiz;Drain;Chambon;Cheynis;Guinet;Hu;Demeyer;Pastor;Giorni;Llères;Stassi;Viano;Gonthier
DOI：
10.1016/s0375-9474(98)00542-9
发表时间：
1998-11
期刊：
Nuclear Physics
影响因子：
--
作者：
M. Colonna;M. Toro;A. Guarnera;S. Maccarone;M. Zielínska-Pfabé;H. Wolter
通讯作者：
M. Colonna;M. Toro;A. Guarnera;S. Maccarone;M. Zielínska-Pfabé;H. Wolter