Interaction of high-power microwaves with plasma in a corrugated wall waveguide

K. Minami; A. Sugawara; Y. Naito; K. Ogura; Tsuguhiro Watanabe; Y. Carmel; W. W. Destler; V. L. Granatstein

Interaction of high-power microwaves with plasma in a corrugated wall waveguide

K. Minami, A. Sugawara, Y. Naito, K. Ogura, Tsuguhiro Watanabe, Y. Carmel, W. W. Destler, V. L. Granatstein

Research output: Contribution to journal › Conference article › peer-review

Abstract

Plasma-filled backward wave oscillators utilizing IREBs have demonstrated the efficiency enhancement up to 40%. Botton and Ron suggested that the high efficiency could be explained by a self-induced distributed feedback mechanism of a density grating formed by ponderomotive potential of backward and forward waves in the slow wave structure. We carried out an experiment to detect such plasma grating formed by high-power externally injected microwaves. In contrast to Botton and Ron's prediction, results indicate that electrons are selectively excluded from the positions R(z) minima assuming that the plasma is non-neutral. Supersonic ion flow in neutral plasma toward the cathode stagnates at R(z) minima.

Original language	English
Pages (from-to)	205
Number of pages	1
Journal	IEEE International Conference on Plasma Science
State	Published - 1 Dec 1994
Externally published	Yes
Event	Proceedings of the IEEE International Conference on Plasma Science - Santa Fe, NM, USA Duration: 6 Jun 1994 → 8 Jun 1994

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

Cite this

@article{33faa4df59fd4386b8cf9f92cc5a5bb7,

title = "Interaction of high-power microwaves with plasma in a corrugated wall waveguide",

abstract = "Plasma-filled backward wave oscillators utilizing IREBs have demonstrated the efficiency enhancement up to 40%. Botton and Ron suggested that the high efficiency could be explained by a self-induced distributed feedback mechanism of a density grating formed by ponderomotive potential of backward and forward waves in the slow wave structure. We carried out an experiment to detect such plasma grating formed by high-power externally injected microwaves. In contrast to Botton and Ron's prediction, results indicate that electrons are selectively excluded from the positions R(z) minima assuming that the plasma is non-neutral. Supersonic ion flow in neutral plasma toward the cathode stagnates at R(z) minima.",

author = "K. Minami and A. Sugawara and Y. Naito and K. Ogura and Tsuguhiro Watanabe and Y. Carmel and Destler, {W. W.} and Granatstein, {V. L.}",

year = "1994",

month = dec,

day = "1",

language = "English",

pages = "205",

journal = "IEEE International Conference on Plasma Science",

issn = "0730-9244",

publisher = "Institute of Electrical and Electronics Engineers",

note = "Proceedings of the IEEE International Conference on Plasma Science ; Conference date: 06-06-1994 Through 08-06-1994",

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TY - JOUR

T1 - Interaction of high-power microwaves with plasma in a corrugated wall waveguide

AU - Minami, K.

AU - Sugawara, A.

AU - Naito, Y.

AU - Ogura, K.

AU - Watanabe, Tsuguhiro

AU - Carmel, Y.

AU - Destler, W. W.

AU - Granatstein, V. L.

PY - 1994/12/1

Y1 - 1994/12/1

N2 - Plasma-filled backward wave oscillators utilizing IREBs have demonstrated the efficiency enhancement up to 40%. Botton and Ron suggested that the high efficiency could be explained by a self-induced distributed feedback mechanism of a density grating formed by ponderomotive potential of backward and forward waves in the slow wave structure. We carried out an experiment to detect such plasma grating formed by high-power externally injected microwaves. In contrast to Botton and Ron's prediction, results indicate that electrons are selectively excluded from the positions R(z) minima assuming that the plasma is non-neutral. Supersonic ion flow in neutral plasma toward the cathode stagnates at R(z) minima.

AB - Plasma-filled backward wave oscillators utilizing IREBs have demonstrated the efficiency enhancement up to 40%. Botton and Ron suggested that the high efficiency could be explained by a self-induced distributed feedback mechanism of a density grating formed by ponderomotive potential of backward and forward waves in the slow wave structure. We carried out an experiment to detect such plasma grating formed by high-power externally injected microwaves. In contrast to Botton and Ron's prediction, results indicate that electrons are selectively excluded from the positions R(z) minima assuming that the plasma is non-neutral. Supersonic ion flow in neutral plasma toward the cathode stagnates at R(z) minima.

UR - http://www.scopus.com/inward/record.url?scp=0028750999&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0028750999

SN - 0730-9244

SP - 205

JO - IEEE International Conference on Plasma Science

JF - IEEE International Conference on Plasma Science

T2 - Proceedings of the IEEE International Conference on Plasma Science

Y2 - 6 June 1994 through 8 June 1994

ER -

Interaction of high-power microwaves with plasma in a corrugated wall waveguide

Abstract

ASJC Scopus subject areas

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