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A Wide-angle and High-efficiency X-ray Spectrometer Based on Flat HOPG Crystal

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IMP & HIRFL Annual Report 2018年第1期 198-199页

作者： shao caojie Yu Deyang Wang Wei Yang Bian Liu Junliang Xue Yingli Zhang Mingwu Song Zhangyong Cai Xiaohong 不详

In collisions between fast heavy ions and atoms,the strong Coulomb field of one of collision partners can cause inner-shell multiple-ionization of the second one[1].The high-resolution measurements of emitted X-rays in the collision are one of the most effective methods to study the multivacancy configurations in atoms or ions as well as the dynamics of the multiple ionization *** energy shifts of X-rays from states with different vacancy configuration could be large[2].For example,the energy of the argon K hypersatellite and satellite line is between 2.9 and 3.8 keV,and the energy shift causing by per L hole is close to 20 eV[3].In order to simultaneous detection of the emitted X-rays over a wide energy range,thus avoiding the problem of changing the angle of crystal and position of the CCD in one collision system,a wide-angle and high-efficiency X-ray spectrometer based on flat HOPG(Highly Oriented Pyrolytic Graphite)crystal was *** to X-ray from multi-ionized atoms.

关键词： process. collision angle

X-ray Emission from Zr, Mo, In and Pb Targets Bombarded by Slow Highly Charged Ar^(q+) (q=13, 14, 15, 16) Ions

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2004年第1期 110-111页

作者： Cai Xiaohong Yu Deyang Lu Rongchun shao caojie Lu Jun Ruan Fangfang Zhang Hongqiang Cui Ying Xu Xu shao Jianxiong Ding Baowei Yang Zhihu Chen Ximeng Department of Modern Physics Lanzhou University Lanzhou 730000 China.

Highly charged Arq+ (q=13, 14, 15, 16) ions were provided by a 14.5 GHz ECR ion source. Highly charged ions were extracted and m/q-selected (where m is the ion mass and q is the ion charge) by an analyzing magnet. The... 详细信息

关键词：高电荷态离子离子源 X射线发射 ARQ 铅靶静电分析器离子电荷离子质量

A High-effcient Crystal X-ray Spectrometer in Von Hamos Geometry:Test with Ni K X-rays

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IMP & HIRFL Annual Report 2019年第1期 78-80页

作者： shao caojie 不详

X-ray crystal spectrometer is an important diagnostic tool for the study of X-ray spectroscopy in ion-atom *** can be used to study the internal structure and decay property of produced high charged ion.

关键词： decay property ion.

Photon-ion Coincidence System for HIRFL-CSRe Internal Target

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IMP & HIRFL Annual Report 2018年第1期 199-200页

作者： Wang Wei shao caojie Yu Deyang Liu Junliang Yang Bian Wang Jianguo Zhang Ningtao Gao Bingshui Ma Peng Yang Herun Cai Xiaohong 不详

A Photon-ion coincidence system for projectile X-ray emission in ion-atom collisions in HIRFL-CSRe internal target is *** system consists of X-ray detectors,ion detectors,signal process electronics and data acquisition(DAQ)*** photon detector which used for detecting the low energy X-rays are combined with HpGe,Si(Li),Silicon drift detector(SDD)and crystal spectrometer(CS).The ion detectors which used to measure charged-particle trajectories are multi-wire proportional chamber(MWPC).The main purpose of the signal process electronics which using standard NIM electronics is converting the analogue signals from the photon and ion detectors into a format suitable for physics *** DAQ system is based on VME bus and the maximum integrated data acquisition system(MIDAS)developed at Paul Scherrer Institute in Switzerland and TRIUMF in Canada.

关键词： system coincidence Internal

Optimization of Internal Cluster Target System

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2005年第1期 110-111页

作者： Lu Rongchun Cai Xiaohong shao caojie Yu Delyang D. K. Toporkov D. K. Nikolenko Ruan Fangfang Zhan Wenlong 不详 Buldker Institute of Nuclear Physics 630090 Novosibirsk Russian Federation.

The cluster target system was installed to the due position last year. Several test experiments such as the test of vacuum system, the calibration of the flux and the stability of system have been done after the installation and collimation of cluster internal target. However, there are two problems which hinder us from going further. One is the blocking of nozzle which results in the failure of a long-term system running; the other is the low pumping power for Hydrogen gases in the first stage of the cluster source cham-

关键词：指标体系群集优化目标系统测试实验真空系统目标瞄准长期运行

Vacant Level Structure (VLS) Dependence in Isocharged Sequence Ions Collision with Helium

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2005年第1期 108-109页

作者： Yu Deyang Cai Xiaohong Lu Rongchun Ruan Fangfang shao caojie Lu Jun Zhang Hongqiang Cui Ying Xu Xu shao Jianxiong Ding Baowei Yang Zhihu Chen Ximeng Liu Zhaoyuan 不详 Department of Modern Physics Lanzhou University Lanzhou 730000 P. R. China.

In highly charged ions(HCI)-atom collisions, many electrons are active and much more channels are opened, and the collision dynamics therefore is much more complicated. Because of the complexity originated from many active electrons which are involved in HCI and atoms collisions, the full quantum treatment is rather difficult, whereas the simple classical over-the-barrier models and semiempirical

关键词：离子碰撞能级结构 VLS 序列高电荷态离子原子碰撞碰撞动力学氦