We developed a one-dimensional hybrid model to simulate the DC/RF combined driven capacitively coupled plasma for argon discharges. The numerical results are used to analyze the influence of the DC source on the plasm...We developed a one-dimensional hybrid model to simulate the DC/RF combined driven capacitively coupled plasma for argon discharges. The numerical results are used to analyze the influence of the DC source on the plasma density distribution, ion energy distributions （IEDs） and ion angle distributions （IADs） on both the RF and DC electrodes. The increase in DC voltage drives more high-energy ions to the electrode applied to the DC source, which makes the IEDs at the DC electrode shift towards higher energy, and the peaks in the IADs shift towards small angle regions. At the same time, it also decreases the ion energy at the RF electrode and enlarges the incident angles of the ions, which strike the RF electrode.展开更多
RF effect and space charge effect are the main sources of the emittance growth in the RF elec-tron gun.The single particle dynamics near the cathode is discussed,and the emittance growth due to RFnonlinear force and t...RF effect and space charge effect are the main sources of the emittance growth in the RF elec-tron gun.The single particle dynamics near the cathode is discussed,and the emittance growth due to RFnonlinear force and time-dependent force are studied in detail.Comparison with the emittance at the gunexit shows that the emittanca growth due to nonlinear RF effect near the cathode can not be neglected.展开更多
基金supported by the Scientific Foundation from Ministry of Education of China (No.N090305004)Doctor Startup Foundation Program of Liaoning Province (No.20111008)
文摘We developed a one-dimensional hybrid model to simulate the DC/RF combined driven capacitively coupled plasma for argon discharges. The numerical results are used to analyze the influence of the DC source on the plasma density distribution, ion energy distributions （IEDs） and ion angle distributions （IADs） on both the RF and DC electrodes. The increase in DC voltage drives more high-energy ions to the electrode applied to the DC source, which makes the IEDs at the DC electrode shift towards higher energy, and the peaks in the IADs shift towards small angle regions. At the same time, it also decreases the ion energy at the RF electrode and enlarges the incident angles of the ions, which strike the RF electrode.
基金The project supported by the Nuclear Science Foundation of China
文摘RF effect and space charge effect are the main sources of the emittance growth in the RF elec-tron gun.The single particle dynamics near the cathode is discussed,and the emittance growth due to RFnonlinear force and time-dependent force are studied in detail.Comparison with the emittance at the gunexit shows that the emittanca growth due to nonlinear RF effect near the cathode can not be neglected.
