1 咸阳师范学院离子束与光物理实验室，陕西 咸阳 712000
2 西安交通大学物理学院，陕西 西安 710049
3 中国科学院近代物理研究所，甘肃 兰州 730000
用动能为1360 keV的129Xeq+（q=17，20，23，25，27）高电荷态离子分别入射到金属Al和Ti固体靶表面，测量高电荷离子与表面相互作用过程中离子俘获表面电子完成中性化所形成的激发态Xe原子和低电离态Xe离子退激辐射的近红外光谱线（800~1700 nm），以及靶原子被离化激发、退激辐射的光谱线。实验结果表明：高电荷态离子入射金属表面的过程中，携带的势能在飞秒量级的时间内沉积到靶表面，使靶原子离化激发，较强的库仑势能可使靶原子形成高离化态和复杂的电子组态、退激辐射光谱线。随着入射离子的电荷态增加，测量谱线的强度增大，该变化趋势与入射离子的势能随电荷增加的变化趋势大体一致，说明经典过垒模型在近玻尔速度能区是成立的。
原子与分子物理学 高电荷态离子 经典过垒模型 禁戒跃迁 近红外光谱
Author Affiliations
Abstract
1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
2 University of Chinese Academy of Sciences, Beijing 100049, China
3 School of Science, Xi'an Jiaotong University, Xi'an 710049, China
4 Department of Engineering Physics, Tsinghua University, Beijing 100084, China
The research activities on warm dense matter driven by intense heavy ion beams at the new project High Intensity heavy-ion Accelerator Facility (HIAF) are presented. The ion beam parameters and the simulated accessible state of matter at HIAF are introduced, respectively. The progresses of the developed diagnostics for warm dense matter research including high energy electron radiography, multiple-channel pyrometer, in-situ energy loss and charge state of ion detector are briefly introduced.
Warm dense matter Intense heavy ion beams HIAF Electron radiography Matter and Radiation at Extremes
2018, 3(2): 85
Author Affiliations
Abstract
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Recent research activities relevant to high energy density physics (HEDP) driven by the heavy ion beam at the Institute of Modern Physics, Chinese Academy of Sciences are presented. Radiography of static objects with the fast extracted high energy carbon ion beam from the Cooling Storage Ring is discussed. Investigation of the low energy heavy ion beam and plasma interaction is reported. With HEDP research as one of the main goals, the project HIAF (High Intensity heavy-ion Accelerator Facility), proposed by the Institute of Modern Physics as the 12th five-year-plan of China, is introduced.
heavy ion beam high energy density physics ion beam and plasma interaction radiography High Power Laser Science and Engineering
2014, 2(4): 04000e39
