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4 - 19 Core Effect on Stabilization of Double Electrons Transfer in Slow Collisions of Isocharged Sequence Ions with Neon

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IMP & HIRFL Annual Report 2010年第1期 225-226页

作者： Lu Rongchun Yu Deyang shao caojie Ruan Fangfang Cai Xiaohong

Hydrogen Tests of HIRFL-CSR Cluster Source

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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 2006年第1期 113-114页

作者： shao caojie Lu Rongchun Cai Xiaohong Li Mingsheng Song Zhangyong Ruan Fangfang

4 - 18 Shell Effect on Subsequent Stabilization of Multi-electron Transfer in Slow Arq ＋-Ar （ q = 6 - 9, 11 ） Collisions

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IMP & HIRFL Annual Report 2010年第1期 223-224页

作者： Lu Rongchun Yu Deyang shao caojie Ruan Fangfang Xue Yingli Cai Xiaohong

Double K-shell Ionization of Nickel Ions in Collision with Various Gas Targets

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IMP & HIRFL Annual Report 2017年第1期 68-69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 energetic heavy ions and atoms,the strong Coulomb field of one of collision partners can cause double K-shell ionization of the second *** previous work we have studied the mechanism of double K-shell ionization in krypton atom by bare xenon under different perturbation strengths κ=Zp/vp,where Zp is the charge of the projectile and vp is its velocity in atomic *** measured double-to-single K-shell ionization cross-section ratio is proportional to the perturbation strengthin the rough region of κ1[1].In order to further investigate such process in a wide rang of perturbation strength,an experiment focusing on K-shell ionization of ions was carried out at HIRFL-CSR in ***19+ions with a energy of 95 MeV/u were stored in CSRe to interact with hydrogen,argon,krypton and xenon target,*** X rays produced in collisions of the ions with the target were detected by two Silicon Drift Detectors(SDD)mounted at 35◦and 60◦observation angles with respect to the ion beam direction.

关键词： perturbation ionization double

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

4-11 Determination of Target Thickness and Luminosity from Beam Energy Losses at HIRFL-CSRe Internal Target

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IMP & HIRFL Annual Report 2015年第1期 205-206页

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

The experiments with an internal target at a storage ring have many advantages. However, it is difficult to determine the absolute cross section of a reaction where luminosity cannot be simply established through macroscopic measurements. Here we present an experimental determination of the effective target thickness from the beam energy losses at the internal target in HIRFL-CSRe. The measurements here are expected to provide the accurate target thickness and luminosity for the absolute cross-section study on future internal target experiments, and also provide some reference values for the study of beam loss mechanism of the heavy ion at HIRFL-CSRe.

关键词： HIRFL-CSRe Internal Target

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