在LiF纳米板中,质子停止功率的轨迹依赖的值效应
Ya-Ting Sun1, Feng Wang1, Cong-Zhang Gao2
1School of Physics, Beijing Institute of Technology, Beijing 100081, China. wangfeng01@tsinghua.org.cn.
Physical chemistry chemical physics : PCCP
|June 12, 2024
概括
在LiF纳米板中的质子阻断功率取决于轨迹. 接近碰撞缺乏可辨认的值,而撞击参数显著影响这种行为,揭示了对电子结构动态的洞察力.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 计算化学计算化学
背景情况:
- 了解材料中的能量沉积对于辐射屏蔽和离子植入等应用至关重要.
- 化 (LiF) 纳米板是具有独特电子性能的有希望的材料.
- 质子停止功率是控制离子-物质相互作用的基本性质.
研究的目的:
- 为了研究LiF纳米板中的质子停止功率的轨迹依赖值效应.
- 探索撞击参数对质子能量损失的影响.
- 分析与LiF纳米片的质子相互作用期间的电子结构动态.
主要方法:
- 时间依赖密度函数理论 (TD-DFT) 与分子动力学 (MD) 非adiabatically 结合.
- 模拟的质子与初始速度范围从0.1到1.0原子单位 (a.u. ) 的情况.
- 电子结构和电子占用率的高分辨率分析.
主要成果:
- 在LiF纳米片中,质子停止功率表现出轨迹依赖的值效应.
- 冲击参数决定了质子停止功率的值行为.
- 近距离碰撞没有显示出质子停止功率的可辨别值.
- 观察了和原子轨道的电子占用率的时间依赖的变化.
结论:
- 撞击参数是了解LiF中的质子停止功率值的一个关键因素.
- 在近距离碰撞中没有值,为纳米级的离子物质相互作用提供了新的见解.
- 这项研究提供了在质子通过过程中详细的电子结构信息,这对于材料设计至关重要.
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