Estimation of plasma density perturbation from dusty plasma injection by laser irradiation on tungsten target in DiPS

In Je KANG; Min-Keun BAE; In Sun PARK; Min Ji LEE; Kyu-Sun CHUNG

doi:10.1088/2058-6272/ab568c

Plasma Science and Technology > 2020 > 22(4): 45601-045601. > DOI: 10.1088/2058-6272/ab568c

In Je KANG, Min-Keun BAE, In Sun PARK, Min Ji LEE, Kyu-Sun CHUNG. Estimation of plasma density perturbation from dusty plasma injection by laser irradiation on tungsten target in DiPS[J]. Plasma Science and Technology, 2020, 22(4): 45601-045601. DOI: 10.1088/2058-6272/ab568c

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Estimation of plasma density perturbation from dusty plasma injection by laser irradiation on tungsten target in DiPS

¹ Department of Electrical Engineering, Hanyang University, Seoul 133791, Republic of Korea
² Plasma Technology Research Center, National Fusion Research Institute, Gunsan 54004, Republic of Korea

Funds: This research was supported by National R&D Program through the Nation Research Foundation of Korea (NRF) funded by the Ministry of Education (2017R1D1A1B03033076). Additionally, this research was supported by National R&D Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (2019M1A7A1A03088471).

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Received Date: June 24, 2019
Revised Date: November 10, 2019
Accepted Date: November 11, 2019

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Abstract

Abstract

To investigate the interaction of dusty plasma with magnetized plasmas at divertor plasma simulator, radial profiles of plasma density (n_e) and electron temperature were measured in terms of plasma discharge currents and magnetic flux intensity by using a fast scanning probes system with triple tips. Dusty plasma with dusts (a generation rate of 3 μg s⁻¹ and a size of 1–10 μm) was produced via interactions between a high-power laser beam and a full tungsten target. As ne increases, the scale of the effects of dusty plasma injection on magnetized plasmas was decreased. Also, the duration of transient fluctuation was reduced. For numerical estimation of plasma density perturbation due to dusty plasma injection, the result was ∼10% at a core region of the magnetized plasma with ne of (2–5)×10¹¹ cm⁻³ at steady state condition.
- plasma density perturbation,
- dusty plasma,
- tungsten dust,
- DiPS

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References (35)

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Estimation of plasma density perturbation from dusty plasma injection by laser irradiation on tungsten target in DiPS