The ionization of CO with metastable Ne( 3P 0,2) in a molecular beam was studied by measuring the emission spectra of CO +(A 2Π i -X 2Σ +). The nascent vibrational and rotational distributions of CO +...The ionization of CO with metastable Ne( 3P 0,2) in a molecular beam was studied by measuring the emission spectra of CO +(A 2Π i -X 2Σ +). The nascent vibrational and rotational distributions of CO +(A) were calculated by spectral simulation and the results are discussed.展开更多
For the purpose of producing high intensity, multiply charged metal ion beams, the dual hollow cathode ion source for metal ions （DUHOCAMIS） was derived from the hot cathode Penning ion source combined with the holl...For the purpose of producing high intensity, multiply charged metal ion beams, the dual hollow cathode ion source for metal ions （DUHOCAMIS） was derived from the hot cathode Penning ion source combined with the hollow cathode sputtering experiments in 2007. To investigate the behavior of this discharge geometry in a stronger magnetic bottle-shaped field, a new test bench for DUHOCAMIS with a high magnetic bottle-shaped field up to 0.6 T has been set up at the Peking University. The experiments with magnetic fields from 0.13 T to 0.52 T have indicated that the discharge behavior is very sensitive to the magnetic flux densities. The slope of discharge curves in a very wide range can be controlled by changing the magnetic field as well as regulated by adjusting the cathode heating power; the production of metallic ions would be much greater than gas ions with the increased magnetic flux density; and the magnetic field has a much higher influence on the DHCD mode than on the PIG mode.展开更多
文摘The ionization of CO with metastable Ne( 3P 0,2) in a molecular beam was studied by measuring the emission spectra of CO +(A 2Π i -X 2Σ +). The nascent vibrational and rotational distributions of CO +(A) were calculated by spectral simulation and the results are discussed.
基金Supported by National Natural Science Foundation of China(11105008,10775011)
文摘For the purpose of producing high intensity, multiply charged metal ion beams, the dual hollow cathode ion source for metal ions （DUHOCAMIS） was derived from the hot cathode Penning ion source combined with the hollow cathode sputtering experiments in 2007. To investigate the behavior of this discharge geometry in a stronger magnetic bottle-shaped field, a new test bench for DUHOCAMIS with a high magnetic bottle-shaped field up to 0.6 T has been set up at the Peking University. The experiments with magnetic fields from 0.13 T to 0.52 T have indicated that the discharge behavior is very sensitive to the magnetic flux densities. The slope of discharge curves in a very wide range can be controlled by changing the magnetic field as well as regulated by adjusting the cathode heating power; the production of metallic ions would be much greater than gas ions with the increased magnetic flux density; and the magnetic field has a much higher influence on the DHCD mode than on the PIG mode.
