反质子与激发态Al团簇碰撞的动力学屏蔽和能量损失
Dynamic screening and energy loss of antiprotons colliding with excited Al clusters
摘要：
我们用含时密度泛函理论计算了反质子与预先激发的小铝团簇碰撞的能量损失。反质子的速度是这样的非线性效应的电子响应的铝集群是相关的。我们得到了反质子穿透激发态团簇比穿透基态团簇传递给团簇的能量要少。我们量化这种差异，并分析它的集群激发光谱。
英文摘要：
We use time-dependent density functional theory to calculate the energy loss of an antiproton colliding with a small Al cluster previously excited. The velocity of the antiproton is such that non-linear effects in the electronic response of the Al cluster are relevant. We obtain that an antiproton penetrating an excited cluster transfers less energy to the cluster than an antiproton penetrating a ground state cluster. We quantify this difference and analyze it in terms of the cluster excitation spectrum.
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