正电子-双原子分子复合物的稳定性和制备
Stability and production of positron-diatomic molecule complexes
摘要：
通过扩散蒙特卡罗模拟计算了e $^+$ BeO和e $^+$ LiF基态的能量.这些结果使我们能够预测这些奇异系统的平衡几何形状和振动频率，并讨论它们的稳定性相对于各种解离通道。由于绝热正电子亲和力被发现是小于这两个复合物的解离能，我们提出这两个分子作为可能的候选人在挑战中产生和检测稳定的正电子分子系统。
英文摘要：
The energies at geometries close to the equilibrium for the e$^+$BeO and e$^+$LiF ground states were computed by means of diffusion Monte Carlo simulations. These results allow us to predict the equilibrium geometries and the vibrational frequencies for these exotic systems,and to discuss their stability with respect to the various dissociation channels. Since the adiabatic positron affinities were found to be smaller than the dissociation energies for both complexes, we propose these two molecules as possible candidates in the challenge to produce and detect stable positron-molecule systems.
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