Investigation of radial heat conduction with 1D self-consistent model in helicon plasmas

Bin TIAN; Mario MERINO; Jie WAN; Yuan HU; Yong CAO

doi:10.1088/2058-6272/ac8399

Plasma Science and Technology > 2023 > 25(1): 015401. > DOI: 10.1088/2058-6272/ac8399

Bin TIAN, Mario MERINO, Jie WAN, Yuan HU, Yong CAO. Investigation of radial heat conduction with 1D self-consistent model in helicon plasmas[J]. Plasma Science and Technology, 2023, 25(1): 015401. DOI: 10.1088/2058-6272/ac8399

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Investigation of radial heat conduction with 1D self-consistent model in helicon plasmas

1.
School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, Peopleʼs Republic of China
2.
Equipo de Propulsión Espacial y Plasmas (EP2), Universidad Carlos Ⅲ de Madrid, Leganés 28911, Spain
3.
Laboratory for Space Environment and Physical Sciences, Harbin Institute of Technology, Harbin 150001, Peopleʼs Republic of China
4.
State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, Peopleʼs Republic of China

More Information

Corresponding author:
Yuan HU, E-mail: yhu@imech.ac.cn

Yong CAO, E-mail: yongc@hit.edu.cn
Received Date: May 25, 2022
Revised Date: June 22, 2022
Accepted Date: July 21, 2022
Available Online: December 05, 2023
Published Date: November 10, 2022

Graphical Abstract

Abstract

Abstract

A 1D radially self-consistent model in helicon plasmas has been established to investigate the influence of radial heat conduction on plasma transport and wave propagation. Two kinds of 1D radial fluid models, with and without considering heat conduction, have been developed to couple the 1D plasma–wave interaction model, and self-consistent solutions have been obtained. It is concluded that in the low magnetic field range the radial heat conduction plays a moderate role in the transport of helicon plasmas and the importance depends on the application of the helicon source. It influences the local energy balance leading to enhancement of the electron temperature in the bulk region and a decrease in plasma density. The power deposition in the plasma is mainly balanced by collisional processes and axial diffusion, whereas it is compensated by heat conduction in the bulk region and consumed near the boundary. The role of radial heat conduction in the large magnetic field regime becomes negligible and the two fluid models show consistency. The local power balance, especially near the wall, is improved when conductive heat is taken into account.
- helicon discharge,
- heat conduction,
- model coupling,
- plasma transport

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Acknowledgments

This work was supported by National Natural Science Foundation of China (No. 51907039) and Shenzhen Technology Project (Nos. JCYJ20190806142603534 and ZDSYS201707280904031). Mario Merino's contribution was supported by the ESPEOS project (No. PID2019-108034RB-I00/AEI/10.13039/501100011033), funded by the Agencia Estatal de Investigación (Spanish National Research Agency).

References (38)

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Investigation of radial heat conduction with 1D self-consistent model in helicon plasmas

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