离子与纳米膜相互作用
发布时间：2019-05-12 11:47
【摘要】：本论文开展了一系列关于离子与纳米膜相互作用方面的研究,主要包含了以下两个部分：1.运用由欧洲核子中心基于C++开发的用于粒子输运模拟的Geant4对负离子与绝缘体微孔膜的相互作用进行模拟,探讨了其中的物理机制。我们考虑了负离子与绝缘体表面相互作用的几个物理效应,在Geant4中编写了新的物理过程,设置与实验参数相一致的初始条件,得到了与实验比较符合的模拟结果。2.高电荷离子穿越可自支撑的超薄单层碳化合物后的电荷态和能量损失的测量。我们采用的这种超薄材料由一个分子层构成,其厚度仅为1.2m,当入射离子能量为keV范围时,相互作用时间仅为1-4 fs。我们研究了高电荷态离子穿越这种材料预前平衡态过程。我们的测量显示了,在所选用的能量和电荷态范围内,高电荷态离子的能量损失和电荷交换是很微小的。
[Abstract]:In this paper, a series of studies on the interaction between ions and nanofilm have been carried out, which mainly include the following two parts: 1. The interaction between negative ions and insulator microporous films is simulated by Geant4, which is developed by the European nucleon Center based on C, and the physical mechanism is discussed. We consider several physical effects of the interaction between negative ions and insulator surface, write a new physical process in Geant4, set the initial conditions consistent with the experimental parameters, and obtain the simulation results which are in good agreement with the experimental results. 2. Measurement of charge state and energy loss of high charge ions passing through self-supporting ultra-thin monolayer carbon compounds. The ultra-thin material we use is composed of a molecular layer with a thickness of only 1.2 m. When the incident ion energy is in the range of keV, the interaction time is only 1 鈮，
本文编号：2475367
[Abstract]:In this paper, a series of studies on the interaction between ions and nanofilm have been carried out, which mainly include the following two parts: 1. The interaction between negative ions and insulator microporous films is simulated by Geant4, which is developed by the European nucleon Center based on C, and the physical mechanism is discussed. We consider several physical effects of the interaction between negative ions and insulator surface, write a new physical process in Geant4, set the initial conditions consistent with the experimental parameters, and obtain the simulation results which are in good agreement with the experimental results. 2. Measurement of charge state and energy loss of high charge ions passing through self-supporting ultra-thin monolayer carbon compounds. The ultra-thin material we use is composed of a molecular layer with a thickness of only 1.2 m. When the incident ion energy is in the range of keV, the interaction time is only 1 鈮，
本文编号：2475367
本文链接：https://www.wllwen.com/kejilunwen/cailiaohuaxuelunwen/2475367.html
