Output characteristics and parameters of the plasma from a gas-discharge low-pressure ultraviolet source using helium-iodine and xenon-iodine mixtures

Шуаибов, А. К.; Grabovaya, I. A.; Гомокі, З. Т.; Kalyuzhnaya, A. G.; Shchedrin, A. I.

doi:10.1134/s1063784209120184

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…Numerical simulation of the plasma kinetics in mixtures of helium and xenon with iodine vapours allowed us to obtain the relation between the emission intensities of iodine atoms and molecules, to calculate their dependences on the buffer gas pressure and halogen concentration, and to analyze the effect of xenon on the emission intensity of the medium. Figure 2 presents the electron energy distribution functions calculated in the е-I 2 -I= 800-50-50 Ра and Хе-I 2 -I= 800-50-50 Ра mixtures at various values of the reduced electric field in the discharge E/N (50-300 Td) (Shuaibov et al, 2009). One can see that the replacement of the helium buffer gas by xenon results in the decrease of the portion of high-energy electrons in the discharge.…”

Section: Fig 1 Energy Level Diagram In the Uv Emittermentioning

confidence: 99%

“…The results of numerical simulations were compared to the data of experimental studies reported in a cycle of works (Shuaibov et al, 2004(Shuaibov et al, , 2005b(Shuaibov et al, , 2009. A longitudinal glow discharge in helium and xenon rare gases was initiated in a cylindrical discharge tube made of quartz transparent to = 190 nm.…”

Section: Comparison With Experimentsmentioning

confidence: 99%

“…It is due to the fact that the excitation and ionization thresholds of xenon atoms (8.3 eV and 12.1 eV, correspondingly) are significantly lower than those of helium (19.8 eV and 22.5 eV), therefore the tail of the distribution function in the xenon mixture is cut off at lower energies. The drift velocities and the mean electron energies calculated as functions of the electric field in the discharge in the studied mixtures are shown in Fig.3 (Shuaibov et al, 2009 Table 2. Kinetic reactions with participation of xenon in the He-Хе-I 2 mixture velocity in the е-I 2 -I medium in the range 10 7 -5·10 7 cm/s, while in the Хе-I 2 -I discharge, it changes in the interval 2·10 6 -8·10 6 cm/s.…”

Section: Fig 1 Energy Level Diagram In the Uv Emittermentioning

confidence: 99%

See 2 more Smart Citations

Numerical Simulation of Plasma Kinetics in Low-Pressure Discharge in Mixtures of Helium and Xenon with Iodine Vapours

Shchedrin¹,

Kalyuzhnaya²

2011

Numerical Simulations of Physical and Engineering Processes

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Section: Fig 1 Energy Level Diagram In the Uv Emittermentioning

confidence: 99%

Section: Comparison With Experimentsmentioning

confidence: 99%

Section: Fig 1 Energy Level Diagram In the Uv Emittermentioning

confidence: 99%

See 1 more Smart Citation

Numerical Simulation of Plasma Kinetics in Low-Pressure Discharge in Mixtures of Helium and Xenon with Iodine Vapours

Shchedrin¹,

Kalyuzhnaya²

2011

Numerical Simulations of Physical and Engineering Processes

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“…In addition to use in plasma thrusters, a main application for iodine-or halidecontaining plasmas are mercury-free radiation sources [1,2]. Besides the generation of radiation by using barrier discharges, ICPs for radiation generation were also investigated [3,4]. Because of certain properties, such as the vapour pressure, halide compounds in particular are suitable as a substitute for mercury [5].…”

Section: Introductionmentioning

confidence: 99%

On the Temperature and Plasma Distribution of an Inductively Driven Xe-I2-Discharge

Gehring

Eizaguirre

Jin

et al. 2021

Plasma

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Inductively Coupled Plasma (ICP) discharges are part of intense research. Predicting different plasma parameters, like the distribution and temperature of the present species, is of great interest for many applications. Iodine- or halide-containing plasmas in particular have an important function, for example, in the development of mercury-free UV radiation sources. Therefore, a 2D simulation model of a xenon- and iodine-containing ICP was created by using the Finite Element Method (FEM) software COMSOL Multiphysics®. The included species and the used reactions are presented in this paper. To verify the simulation in relation to the plasma distribution, the results were compared with measurements from literature. The temperature of the lamp vessel was measured in relation to the temperature distribution and also compared with the results of the simulation. It could be shown that the simulation reproduces the plasma distribution with a maximal deviation of ≈6.5% to the measured values and that the temperature distribution in the examined area can be predicted with deviations of up to ≈24% for long vessel dimensions and ≈3% for shorter dimensions. However, despite the deviating absolute values, the general plasma behaviour is reproduced by the simulation. The simulation thus offers a fast and cost-effective method to estimate an effective geometrical range of iodine-containing ICPs.

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“…基于碘工质微牛级电推力器日益迫切的需求, 需要针对性开展工作, 设计合理的碘工质等离子体放电装置, 验证方案可行性, 解决当前缺少小功率低成本微纳卫星推进系统的问题. 现有可以产生碘等离子体的装置主要有激光诱导碘等离子体源、碘辉光放电灯、碘射频感性耦合等离子体源、碘埃文森微波谐振腔等 [18][19][20][21] . 电子回旋共振 (electron cyclotron resonance, ECR)等离子体源以其无需内电极、低气压电离、等离子体密度较高和结构紧凑等优点广泛应用于电推进装置中 [22][23][24] .…”

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Iodine electron cyclotron resonance plasma source for electric propulsion

Li,

Zeng,

Liu

et al. 2023

Acta Phys. Sin.

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With the rapid development of commercial space in recent years, the need for low-power and low-cost propulsion systems is becoming more and more urgent. Compared with conventional chemical propulsion, electric propulsion has a higher specific impulse. Compared with the conventional xenon propellant, iodine propellant does not require high pressure storage, is cheap and close to the relative atomic mass and ionization energy of xenon. Electron cyclotron resonance source has the advantages of no internal electrode, low pressure ionization, high plasma density and compact structure, which is suitable for low power electric propulsion. Therefore, the study of low power iodine propellant electron cyclotron resonance plasma source is of great significance. In this paper, a set of corrosion-resistant feed system with balanced and stable output of iodine vapor is designed. Then the design of iodine-corrosionresistant electron cyclotron resonance thruster is completed. A corrosion-resistant coaxial cavity structure is used to feed the microwave to the thruster, and the channel magnetic field is changed into a cusped field to generate more ECR layers. Finally, the combined ignition experiment was successful, and it became the first plasma source using electron cyclotron resonance to ionize iodine propellant that can be used for electric propulsion in the world. Analysis experiments and static magnetic field, microwave electric field distribution found that the unstable plasma plume scintillation at low power and low flow is caused by the conversion between ordinary wave electron plasmon resonance heating and extraordinary wave electron cyclotron resonance heating modes. The decrease of ionization rate at high flow rate is caused by electron loss, wall loss and electronegativity of iodine propellant. Based on this principle, an improvement scheme is proposed. The plasma source has no obvious damage after discharge, which indicates that it has the potential of long life. This work preliminarily proves that the low power electron cyclotron resonance electric propulsion scheme of low power iodine propellant is feasible.

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Output characteristics and parameters of the plasma from a gas-discharge low-pressure ultraviolet source using helium-iodine and xenon-iodine mixtures

Cited by 4 publications

References 8 publications

Numerical Simulation of Plasma Kinetics in Low-Pressure Discharge in Mixtures of Helium and Xenon with Iodine Vapours

Numerical Simulation of Plasma Kinetics in Low-Pressure Discharge in Mixtures of Helium and Xenon with Iodine Vapours

On the Temperature and Plasma Distribution of an Inductively Driven Xe-I2-Discharge

Iodine electron cyclotron resonance plasma source for electric propulsion

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