关联法研究高电荷态离子在表面的瞬间能量沉积过程

项目名称： 关联法研究高电荷态离子在表面的瞬间能量沉积过程

项目编号： No.11275238

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 王瑜玉

作者单位： 中国科学院近代物理研究所

项目金额： 96万元

中文摘要： 低速高电荷态离子与表面相互作用的研究不仅有助于理解强场下小尺度瞬间高功率能量加载的物理机制和微观动力学过程，而在微纳尺度加工，单色强辐射源等技术领域有着重要的应用前景。本申请将利用中科院近物所320kV高压平台提供的高电荷态离子与不同材料表面作用，通过关联测量小角度掠入射下发射电子的能谱和岀射离子的电荷态及其剩余能量，并结合靶表面形貌的观测，研究该作用过程的物理机制与规律，发展和完善相关理论模型。该项研究将首次把上述两个紧密相关的物理过程（即 "离子的能损和电荷演化"与"电子的发射"）进行符合关联测量，方法上可行且具有创新性；实验平台提供的离子束在初始能量与电荷态等方面连续可调，还可以把这项研究拓展到玻尔速度附近（这是一个研究较少但十分重要的作用能区），从而使这项研究具有系统性且富有特色；课题组成员年青且富有经验，有望在本基金的支持下在该领域取得有创新性和突破性的进展。

中文关键词： 高电荷态离子；材料辐照；能量沉积；加法效应；关联测量

英文摘要： The interaction of slow highly charged ions between surfaces not only helps to understand the physical mechanism micro-dynamic process of small-scale instant high power energy deposition in a strong field, but also has important applications on the micro-and nano-scale manufacture and strong monochromatic radiation source technologies. This application will use the highly charged ions provided from the 320kV high voltage platform in the Institute of Modern Physics to interact on different surfaces. Combined with observation of the target surface morphology, the emitted electron energy spectrum, charge state distribution and remain energy of scattered ions are associatively measured in a small grazing angle. The goal is not only to study the physical mechanisms and laws during interaction process, but also to develop and improve the relevant theoretical model. The study will be the first time to study these two closely related physical processes (ion's energy loss and charge evolution, electron emission) with the associated measurement method which is feasible and innovative. The charge state and incident energy of ion beam provided from the experimental platform is continuously adjustable. This study can also be extended to near the Bohr velocity which is studied less but important to make the research work sys

英文关键词： highly charged ions；material irradiattion；energy deposition；additive effect；correlative measurement