Electrostatic wave generation by the faraday shield in ICRF heating

Jukka Heikkinen

doi:10.1016/0375-9601(91)91093-S

Electrostatic wave generation by the faraday shield in ICRF heating

Jukka Heikkinen

VTT Technical Research Centre of Finland

Research output: Contribution to journal › Article › Scientific › peer-review

5 Citations (Scopus)

Abstract

The generation of fringing fields by the Faraday shield of a fast wave antenna and the concomitant coupling of the wave power to electrostatic waves is analysed for the case of weakly misaligned screen blades. The coupled electrostatic wave power is found to be proportional to sin² β, where β ⪡ 1 is the misalignment angle. Under optimum conditions when the angular frequency is just below the first harmonic of the cyclotron frequency of any ion species and the plasma density near the shield is high, 10–20% of the loading of the antenna may result from ion Bernstein wave excitation with β = 0.1.

Original language	English
Pages (from-to)	205 - 210
Number of pages	6
Journal	Physics Letters A
Volume	152
Issue number	3-4
DOIs	https://doi.org/10.1016/0375-9601(91)91093-S
Publication status	Published - 1991
MoE publication type	A1 Journal article-refereed

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title = "Electrostatic wave generation by the faraday shield in ICRF heating",

abstract = "The generation of fringing fields by the Faraday shield of a fast wave antenna and the concomitant coupling of the wave power to electrostatic waves is analysed for the case of weakly misaligned screen blades. The coupled electrostatic wave power is found to be proportional to sin2 β, where β ⪡ 1 is the misalignment angle. Under optimum conditions when the angular frequency is just below the first harmonic of the cyclotron frequency of any ion species and the plasma density near the shield is high, 10–20% of the loading of the antenna may result from ion Bernstein wave excitation with β = 0.1.",

author = "Jukka Heikkinen",

note = "Project code: YDI9006",

year = "1991",

doi = "10.1016/0375-9601(91)91093-S",

language = "English",

volume = "152",

pages = "205 -- 210",

journal = "Physics Letters A",

issn = "0375-9601",

publisher = "Elsevier",

number = "3-4",

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T1 - Electrostatic wave generation by the faraday shield in ICRF heating

AU - Heikkinen, Jukka

N1 - Project code: YDI9006

PY - 1991

Y1 - 1991

N2 - The generation of fringing fields by the Faraday shield of a fast wave antenna and the concomitant coupling of the wave power to electrostatic waves is analysed for the case of weakly misaligned screen blades. The coupled electrostatic wave power is found to be proportional to sin2 β, where β ⪡ 1 is the misalignment angle. Under optimum conditions when the angular frequency is just below the first harmonic of the cyclotron frequency of any ion species and the plasma density near the shield is high, 10–20% of the loading of the antenna may result from ion Bernstein wave excitation with β = 0.1.

AB - The generation of fringing fields by the Faraday shield of a fast wave antenna and the concomitant coupling of the wave power to electrostatic waves is analysed for the case of weakly misaligned screen blades. The coupled electrostatic wave power is found to be proportional to sin2 β, where β ⪡ 1 is the misalignment angle. Under optimum conditions when the angular frequency is just below the first harmonic of the cyclotron frequency of any ion species and the plasma density near the shield is high, 10–20% of the loading of the antenna may result from ion Bernstein wave excitation with β = 0.1.

U2 - 10.1016/0375-9601(91)91093-S

DO - 10.1016/0375-9601(91)91093-S

M3 - Article

VL - 152

SP - 205

EP - 210

JO - Physics Letters A

JF - Physics Letters A

SN - 0375-9601

IS - 3-4

ER -