标题： 火球流体力学的简单解析解 显示英文标题

标题： Simple analytic solution of fireball hydrodynamics

摘要： 在假设理想气体状态方程的情况下，发现了一类新的非相对论性旋转对称火球的简单解析流体力学解。 该解具有线性的流速分布和非平凡的横向温度分布。 径向温度梯度仅在无碰撞气体极限下消失。 Zimányi-Bondorf-Garpman 解以及扩展流体力学源的 Buda-Lund 参数化被作为特例恢复。 结果被用于预测 1.93 AGeV Ni + Ni 反应中质子-质子关联和光谱数据的新特征。 显示英文摘要

摘要： A new family of simple analytic solutions of hydrodynamics is found for non-relativistic, rotationally symmetric fireballs assuming an ideal gas equation of state. The solution features linear flow profile and a non-trivial transverse temperature profile. The radial temperature gradient vanishes only in the collisionless gas limit. The Zimanyi-Bondorf-Garpman solution and the Buda-Lund parameterization of expanding hydrodynamical sources are recovered as special cases. The results are applied to predict new features of proton-proton correlations and spectra data at 1.93 AGeV Ni + Ni reactions.