d–α correlation functions and collective motion in Xe+Au collisions at E/A=50 MeV
d–α correlation functions and collective motion in Xe+Au collisions at E/A=50 MeV
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DOI：
10.1016/j.physletb.2007.07.031
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发表时间：
2007-08
影响因子：
4.4
通讯作者：
G. Verde;P. Danielewicz;W. G. Lynch;C. F. Chan;C. Gelbke;K. Lau;T. X. Liu;X. Liu;D. Seymour-D.-Seym
中科院分区：
文献类型：
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作者：
G. Verde;P. Danielewicz;W. G. Lynch;C. F. Chan;C. Gelbke;K. Lau;T. X. Liu;X. Liu;D. Seymour-D.-Seym
研究了E/A=50 MeV的Xe+Au中心碰撞中几何和集体运动对d -α相关函数的影响。如果没有集体运动，这些数据就无法解释，集体运动可能部分沿着光束轴。利用蒙特卡罗模型可以得到数据的半定量描述，其中热辐射叠加在集体运动上。发射体积和热运动与集体运动之间的竞争对相关函数的形状有显著影响，激发了将强度干涉测量研究扩展到大质量粒子的新策略。
The interplay of the effects of geometry and collective motion on d–α correlation functions is investigated for central Xe+Au collisions at E/A=50 MeV. The data cannot be explained without collective motion, which could be partly along the beam axis. A semi-quantitative description of the data can be obtained using a Monte Carlo model, where thermal emission is superimposed on collective motion. Both the emission volume and the competition between the thermal and collective motion influence significantly the shape of the correlation function, motivating new strategies for extending intensity interferometry studies to massive particles.