Numerical and Experimental Diagnostics of Dusty Plasma in a Coaxial Gridded Hollow Cathode Discharge

Jia, Jieshu; Yuan, Chengxun; Kudryavtsev, A. A.; Eliseev, S. I.; Kirsanov, G. V.; Bekasov, V. S.; Gao, Ruilin; Zhou, Zhongxiang

doi:10.1109/tps.2016.2602478

Cited by 20 publications

(13 citation statements)

References 30 publications

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“…This is because if the concentration of dust particles is the same, as the size of the dust particles increases, it becomes easier for them to reflect the EM wave, consequently increasing the RCS. This phenomenon is the same as that described in the literature [16,17]. Fig.…”

Section: Effects Of Time-varying Dusty Plasma Parameterssupporting

confidence: 88%

“…In 1992, Havnes et al [15] have done a large volume of work on dust scattering. Jia et al [16] analysed the diagnostics of dusty plasma in a coaxial gridded hollow cathode discharge by theory and experiment. Other studies [17][18][19][20][21][22] have reported results on the EM wave-propagation characteristics of weakly ionised and fully ionized dusty plasma, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Research on the scattering characteristics of electromagnetic waves in time‐varying and weakly collisional and fully ionized dusty in plasma

Guo

Chen

2018

IET Microwaves, Antennas & Propagation

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In this study, a three‐dimensional (3D) time‐varying dusty plasma iterative finite‐difference time‐domain (FDTD) algorithm is deduced by combining the relative permittivity of fully ionised dusty plasma and the shift‐operator FDTD method. Then, a 3D time‐varying dusty plasma model is established. The scattering characteristics of electromagnetic (EM) waves are analysed by calculating the backward radar cross‐sections (RCSs) of different parameters in time‐varying dusty plasma. The results show that the RCS will increase when the dust particles are considered in plasma. The values of RCS increase with the dust radius dust concentration relaxation time of charge and electron density increasing. In dusty plasma, the electron temperature has a different effect on the incident wave frequency bands. Finally, the effects of dust to electron density ratio on RCS are analysed and as the increase of the incident frequency, the absorption of dusty plasma on EM wave will reduce.

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Section: Effects Of Time-varying Dusty Plasma Parameterssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Research on the scattering characteristics of electromagnetic waves in time‐varying and weakly collisional and fully ionized dusty in plasma

Guo

Chen

2018

IET Microwaves, Antennas & Propagation

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“…Although this approach is not as accurate as the hybrid model, the fluid model for hollow cathode discharges can be useful to provide qualitative trends in many cases. 18,[40][41][42][43][44] Also, the transient evolution of the discharge toward steady state can be very time consuming in the hybrid model, and the fully fluid model can be first used to approach the steady state. The present fluid model is less computationally expensive and can successfully predict the existence of the transition characteristics of discharges in a hollow cathode.…”

Section: Model Descriptionmentioning

confidence: 99%

Transition characteristics of low-pressure discharges in a hollow cathode

Verboncoeur

Christlieb

et al. 2017

Physics of Plasmas

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Based on a two-dimensional (2-D) fluid model, the transition processes of discharges in a hollow cathode at low pressure are observed by changing three parameters, i.e., applied voltage U 0 , gas pressure p, and external circuit ballast resistance R b. The voltage-current characteristic curves, electron density distributions, and electric potential distributions of different discharge operating points in a hollow cathode are obtained. The transition processes are characterized by the voltage-current characteristic curves, the electron density distributions, and the electrical potential distributions. The transition modes observed from the voltage-current characteristics include the low-current abnormal mode, normal mode, and high-current abnormal mode. Increasing the applied voltage U 0 can have a similar effect on the discharge transition processes to decreasing the ballast resistance. By increasing U 0 from 200 V to 500 V and decreasing R b from 5000 kX to 100 kX independently, it is observed that the discharge transfers from the outside to the inside of the hollow cavity, thus forming the virtual anode potential. By increasing the gas pressure p from 50 Pa to 5 kPa, the discharge also moves into the hollow cavity from the outside; however, a further increase in the gas pressure leads to the discharge escaping from the hollow cavity. Simulation results and characterizations for different parameters are presented for the transition properties of low-pressure discharges in a hollow cathode. It is verified that the hollow cathode discharge only exists under certain ranges of the above parameters. Published by AIP Publishing.

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“…A. I. Golovin studied the electron beam generation process based on a grid anode open discharge and obtained its discharge current and voltage characteristics [29]. R. L. Gao and J. S. Jia studied large-area plasma characteristics produced by glow discharge with a coaxial grid hollow cathode [30]- [32]. S. G. Belostotsky et al proposed a method to measure the luminous efficiency of the cathode phosphor's coating by using the electron beam generated by gas discharge with a grid electrode [33].…”

Section: Introductionmentioning

confidence: 99%

Attenuation of Microwave Radiation by Post-Anode Plasma in a Composite Grid Electrode Structure

et al. 2022

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This paper presents a new composite grid electrode structure for the generation of plasma that is suitable for modeling microwave radiation transmission through atmospheric plasma. The new grid anode-composite cathode (GA-CC) structure is to be contrasted with the ordinary grid anode-cathode plate (GA-CP) structure. It is found that the breakdown voltage of the new GA-CC electrode structure is lower than that of the GA-CP structure and is a bit shifted to the right on the Pd-axis. An advantage of the GA-CC structure over the GA-CP structure is that it requires a lower voltage to generate the same current. It is found that plasma generated by the new GA-CC structure selectively strengthens electromagnetic waves attenuation in the frequency range of 9-12 GHz.

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Numerical and Experimental Diagnostics of Dusty Plasma in a Coaxial Gridded Hollow Cathode Discharge

Cited by 20 publications

References 30 publications

Research on the scattering characteristics of electromagnetic waves in time‐varying and weakly collisional and fully ionized dusty in plasma

Research on the scattering characteristics of electromagnetic waves in time‐varying and weakly collisional and fully ionized dusty in plasma

Transition characteristics of low-pressure discharges in a hollow cathode

Attenuation of Microwave Radiation by Post-Anode Plasma in a Composite Grid Electrode Structure

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