Spectroscopic analysis of magnetized hollow cathode discharge plasma characteristics

被引:15
作者
Abbas, Qusay Adnan [1 ]
Ahmed, Ala F. [2 ]
Mutlak, Falah A. -H. [1 ]
机构
[1] Univ Baghdad, Dept Phys, Coll Sci, Baghdad, Iraq
[2] Univ Baghdad, Dept Astron & Space, Coll Sci, Baghdad, Iraq
来源
OPTIK | 2021年 / 242卷
关键词
Hollow cathode discharge; Electron temperature; Electron number density; Stark broadening; Magnetic field;
D O I
10.1016/j.ijleo.2021.167260
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The present work investigated the discharge characteristics in the magnetized hollow cathode system. Also, the gas pressure effect on the discharge characteristics has been examined with a gas pressure between (0.08 and 0.4) Torr. The voltage-current curve of magnetized hollow cathode discharges has the voltage become approximately constant with slight increases in current. The normal glow discharge was established with constant voltage and increasing current. When the current is increased even more, then, the discharge turns into a mode comparable to the normal glow discharge between the parallel electrodes. The increasing of the pressure causes compressing of the cathode falls inside the cathode cavity and the negative glow becomes thin and more luminous. The spectroscopic method used depends on analyzing the argon's emission atomic spectra. The electron temperature has been evaluated with the use of Boltzmann plot approach. The influence of the pressure on electron temperature observed the reduction in electron temperature when the pressure is increased. The electron number density has been calculated with the use of the Stark broadening method. The density curve indicated that the increase in electron number density with increasing of pressure until 0.4 Torr and then reduced with pressure exceeds 0.4 Torr.
引用
收藏
页数:7
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