欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
利用冷靶反冲离子动量谱仪，对低能He^2＋-He碰撞反应中产生的反冲靶离子和炮弹离子进行了符合测量，根据反冲靶离子的动量，研究了转移电离过程中的电荷转移机理．实验结果表明：在20-40keV能量范围内，靶原子上的一个电子俘获到炮弹离子的基态，另一个电子直接发射到靶的连续态的直接电离及另一个电子俘获到炮弹离子的连续态的过程（ECC）是最主要的转移电离机理，且ECC过程主要发生在大碰撞参数条件下；炮弹离子俘获两个电子处在双激发态的自电离过程的贡献很小．
英文摘要：
The processes of transfer ionization in He^2＋-He collisions at energies ranging from 20 to 40 keV have been studied experimentally by means of cold target recoil ions momentum spectroscopy. From the longitudinal momentum spectra of recoil ions, different mechanisms of transfer ionization have been obtained. The results show that one of the electrons of helium atom being captured into the ground state of projectile ion He^2 ＋ and the other one emitted to the continuum state of projectile or target are the dominant mechanisms of transfer ionization. The autoionization cross section of projectile after two-electron capture into a double excited state is small. Transfer ionization for one target electron capture into ground state and the other one into the continuum of projectile mainly occurs at large impact parameter collisions.
同期刊论文项目
同项目期刊论文
Resonance energies, absorption oscillator strengths and ionization potentials for the element hassiu
State-Selective Electron Capture for keV Ions and Helium Collisions Studied by Recoil Momentum Spect
Emission characteristics of three final continuum electrons produced in low-energy double ionization
The excitation energies, ionization potentials, and oscillator strengths of neutral and ionized spec
Average Energy Loss Measured in Single and Double Electron Capture Collisions of He2+ on Ar at Low V
Photoionization of 1s electron and corresponding shake-up process in ground and excited lithium atom
The excitation energies, ionization potentials and oscillator strengths of neutral and ionized speci
Resonance electron-impact excitation and polarization of the magnetic quadrupole line of neonlike Ba
期刊信息
位置：