论文标题
中子皮肤厚度对由中子富弹性弹丸$^{50} $ ca引起的反应的直接硬光子排放的影响
Effects of neutron-skin thickness on direct hard photon emission from reactions induced by the neutron-rich projectile $^{50}$Ca
论文作者
论文摘要
与$^{12} $ c和$^{40} $ CA目标的中子富含弹丸$^{50} $ CA相撞的直接硬光子排放在中子富含中子的弹丸$^{50} $ CA的碰撞中。通过调整液滴模型中中子密度的扩散参数以获得$^{50} $ CA的不同中子皮肤厚度，通过多个探针研究了中子皮肤厚度对直接硬光子发射的影响。结果表明，周围碰撞中中子皮肤厚度的增加，产生了更直接的硬光子。同时，我们发现中央碰撞和外围碰撞之间的多样性产量比$ r_ {cp}（σ_γ）$以及对直接硬光子的速度依赖性对中子皮肤厚度敏感。结果表明，可以将直接硬光子发射视为可观察到的实验性，以提取中子皮肤厚度的信息。
Direct hard photon emissions from incoherent proton-neutron bremsstrahlung in collisions of the neutron-rich projectile $^{50}$Ca with $^{12}$C and $^{40}$Ca targets are simulated in the framework of the isospin-dependent quantum molecular dynamics (IQMD) model. By adjusting the diffuseness parameter of neutron density in the droplet model to obtain different neutron skin thicknesses for $^{50}$Ca, the effects of neutron skin thickness on direct hard photon emission are investigated via several probes. The results show that more direct hard photons are produced with increasing neutron skin thickness in peripheral collisions. Meanwhile, we find that the multiplicity yield ratio $R_{cp}(σ_γ)$ between central collisions and peripheral collisions as well as the rapidity dependence of multiplicity for direct hard photons are sensitive to neutron skin thickness. The results indicate that direct hard photon emission can be taken as an experimental observable to extract information on neutron skin thickness.
