Nuclear stopping and compression in heavy-ion collisions at intermediate energies
Nuclear stopping and compression in heavy-ion collisions at intermediate energies
复制标题
中等能量重离子碰撞中的核停止和压缩
DOI：
10.1016/j.physletb.2008.07.063
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发表时间：
2008-09
影响因子：
4.4
通讯作者：
Zhang, Xue-Ying
中科院分区：
文献类型：
--
作者：
Jin, Gen-Ming;Zhang, Ya-Peng;Xu, Hu-Shan;Yao, Nan;Feng, Zhao-Qing;Fu, Fen;Yuan, Xiao-Hua;Zhang, Ming;Xiao, Zhi-Gang;Zhang, Xue-Ying
用同位旋相关的量子分子动力学（IQMD）模型研究了Ni+Ni和Pb+Pb在0.4GeV/u和1.2GeV/u能量下的核阻止和径向流.在所有能量下，较重系统的膨胀速度和核阻止程度都较高。碰撞系统质心处的流动能量与总可用能量之比与核阻止程度呈正相关。只有在后者考虑非零碰撞时间效应时，压缩中达到的最大密度（ρmax）才与流体力学预测相当。在1 GeV/u能量范围内，由于部分透明，火球中心区域的最大密度随束流能量的增加而逐渐变平。
The nuclear stopping and the radial flow are investigated with an isospin-dependent quantum molecular dynamics (IQMD) model for Ni+Ni and Pb+Pb from 0.4 to and 1.2 GeV/u. The expansion velocity as well as the degree of nuclear stopping are higher in the heavier system at all energies. The ratio between the flow energy and the total available energy in center of mass of the colliding systems exhibits a positive correlation to the degree of nuclear stopping. The maximum density (ρmax) achieved in the compression is comparable to the hydrodynamics prediction only if the non-zero collision time effect is taken into account in the later. Due to the partial transparency, the growing of the maximum density achieved in the central region of the fireball with the increase of beam energy becomes gradually flat in the 1 GeV/u energy regime.
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影响因子：
3.1
作者：
Y. Zhang;Zhu-xia Li
通讯作者：
Y. Zhang;Zhu-xia Li
影响因子：
3.1
作者：
Bao-An Li;Lie-Wen Chen
通讯作者：
Bao-An Li;Lie-Wen Chen
DOI：
10.1016/0370-1573(91)90094-3
发表时间：
1991-04
期刊：
Physics Reports
影响因子：
--
作者：
J. Aichelin
通讯作者：
J. Aichelin
影响因子：
8.6
作者：
C. Sturm;I. Böttcher;M. Dȩbowski;A. Förster;E. Grosse;P. Koczoń;B. Kohlmeyer;F. Laue;M. Mang;L. Naumann;H. Oeschler;F. Pühlhofer;E. Schwab;P. Senger;Y. Shin;J. Speer;H. Ströbele;G. Surówka;F. Uhlig;A. Wagner;W. Waluś
通讯作者：
C. Sturm;I. Böttcher;M. Dȩbowski;A. Förster;E. Grosse;P. Koczoń;B. Kohlmeyer;F. Laue;M. Mang;L. Naumann;H. Oeschler;F. Pühlhofer;E. Schwab;P. Senger;Y. Shin;J. Speer;H. Ströbele;G. Surówka;F. Uhlig;A. Wagner;W. Waluś
影响因子：
8.6
作者：
W. Reisdorf;A. Andronic;A. Gobbi;O. Hartmann;N. Herrmann;K. Hildenbrand;Y. Kim;M. Kirejczyk
通讯作者：
W. Reisdorf;A. Andronic;A. Gobbi;O. Hartmann;N. Herrmann;K. Hildenbrand;Y. Kim;M. Kirejczyk