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arXiv 1104.3240nucl-th
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碰撞几何对质量非对称系统能量平衡的影响

Role of colliding geometry on the balance energy of mass-asymmetric systems

Supriya Goyal

摘要:

通过改变质量不对称性(η = AT-Ap/AT + AP,其中AT和AP分别是靶和射弹的质量)从0.1到0.7,在40-240的质量范围内以及平衡能的质量依赖性,研究了碰撞几何对质量不对称系统平衡能(Ebal)的作用.我们的研究结果表明,碰撞几何有显着的影响,非对称系统的Ebal。我们发现,当我们从中心碰撞到外围碰撞时,质量不对称对Ebal的影响在整个质量范围内都会增加。有趣的是,我们发现,对于每个固定的系统质量(Atot)的影响的碰撞参量变化几乎是均匀的整个质量不对称范围。对于每个η,Ebal在所有碰撞几何中都遵循幂律行为(\propto Aτ

英文摘要:

We study the role of colliding geometry on the balance energy (Ebal) of mass-asymmetric systems by varying the mass asymmetry (η = AT - Ap/AT + AP, where AT and AP are the masses of the target and projectile, respectively) from 0.1 to 0.7, over the mass range 40-240 and on the mass dependence of the balance energy. Our findings reveal that colliding geometry has a significant effect on the Ebal of asymmetric systems. We find that, as we go from central collisions to peripheral ones, the effect of mass asymmetry on Ebal increases throughout the mass range. Interestingly, we find that for every fixed system mass (Atot) the effect of the impact parameter variation is almost uniform throughout the mass-asymmetry range. For each η, Ebal follows a power-law behavior (\propto Aτ) at all colliding geometries

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