Development of radially movable multichannel Reynolds stress probe system for a cylindrical laboratory plasma

Yoshihiko Nagashima; Shigeru Inagaki; Kunihiro Kamakaki; Hiroyuki Arakawa; Takuma Yamada; Shunjiro Shinohara; Yoshinobu Kawai; Masatoshi Yagi; Akihide Fujisawa; Sanae I. Itoh; Kimitaka Itoh; Yuichi Takase

doi:10.1063/1.3557384

Development of radially movable multichannel Reynolds stress probe system for a cylindrical laboratory plasma

Yoshihiko Nagashima, Shigeru Inagaki, Kunihiro Kamakaki, Hiroyuki Arakawa, Takuma Yamada, Shunjiro Shinohara, Yoshinobu Kawai, Masatoshi Yagi, Akihide Fujisawa, Sanae I. Itoh, Kimitaka Itoh, Yuichi Takase

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Abstract

A new radially movable multichannel azimuthal probe system has been developed for measuring azimuthal and radial profiles of electrostatic Reynolds stress (RS) per mass density of microscale fluctuations for a cylindrical laboratory plasma. The system is composed of 16 probe units arranged azimuthally. Each probe unit has six electrodes to simultaneously measure azimuthal and radial electric fields for obtaining RS. The advantage of the system is that each probe unit is radially movable to measure azimuthal RS profiles at arbitrary radial locations as well as two-dimensional structures of fluctuations. The first result from temporal observation of fluctuation azimuthal profile presents that a low-frequency fluctuation (1-2 kHz) synchronizes oscillating Reynolds stress. In addition, radial scanning of the probe system simultaneously demonstrates two-dimensional patterns of mode structure and nonlinear forces with frequency f 1.5 kHz and azimuthal mode number m 1.

Original language	English
Article number	033503
Journal	Review of Scientific Instruments
Volume	82
Issue number	3
DOIs	https://doi.org/10.1063/1.3557384
Publication status	Published - Mar 2011

All Science Journal Classification (ASJC) codes

Instrumentation

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10.1063/1.3557384

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@article{f699f01799f9431eb57c63fa1f340494,

title = "Development of radially movable multichannel Reynolds stress probe system for a cylindrical laboratory plasma",

abstract = "A new radially movable multichannel azimuthal probe system has been developed for measuring azimuthal and radial profiles of electrostatic Reynolds stress (RS) per mass density of microscale fluctuations for a cylindrical laboratory plasma. The system is composed of 16 probe units arranged azimuthally. Each probe unit has six electrodes to simultaneously measure azimuthal and radial electric fields for obtaining RS. The advantage of the system is that each probe unit is radially movable to measure azimuthal RS profiles at arbitrary radial locations as well as two-dimensional structures of fluctuations. The first result from temporal observation of fluctuation azimuthal profile presents that a low-frequency fluctuation (1-2 kHz) synchronizes oscillating Reynolds stress. In addition, radial scanning of the probe system simultaneously demonstrates two-dimensional patterns of mode structure and nonlinear forces with frequency f 1.5 kHz and azimuthal mode number m 1.",

author = "Yoshihiko Nagashima and Shigeru Inagaki and Kunihiro Kamakaki and Hiroyuki Arakawa and Takuma Yamada and Shunjiro Shinohara and Yoshinobu Kawai and Masatoshi Yagi and Akihide Fujisawa and Itoh, {Sanae I.} and Kimitaka Itoh and Yuichi Takase",

note = "Funding Information: We appreciate Professor G. R. Tynan of University of California, San Diego, for useful suggestions about method for Reynolds stress measurement and circuit design. This work was mainly supported by a Grant-in-Aid for Young Scientist (B) (18760637) of JSPS and a Grant-in-Aid for Specially-Promoted Research (16002005) [Itoh project] of MEXT, Japan. This work was partially supported by a Grant-in-Aid for Scientific Research (S) (21224014) of JSPS, Japan, and by the collaborations of NIFS (NIFS07KOAP017 and NIFS10KOAP023), RIAM of Kyushu University, and The University of Tokyo. One of the authors (Y.N.) would like to appreciate Mr. Tachikawa of Pascal Co., Ltd. for his help in construction of the probe system.",

year = "2011",

month = mar,

doi = "10.1063/1.3557384",

language = "English",

volume = "82",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics Publising LLC",

number = "3",

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TY - JOUR

T1 - Development of radially movable multichannel Reynolds stress probe system for a cylindrical laboratory plasma

AU - Nagashima, Yoshihiko

AU - Inagaki, Shigeru

AU - Kamakaki, Kunihiro

AU - Arakawa, Hiroyuki

AU - Yamada, Takuma

AU - Shinohara, Shunjiro

AU - Kawai, Yoshinobu

AU - Yagi, Masatoshi

AU - Fujisawa, Akihide

AU - Itoh, Sanae I.

AU - Itoh, Kimitaka

AU - Takase, Yuichi

N1 - Funding Information: We appreciate Professor G. R. Tynan of University of California, San Diego, for useful suggestions about method for Reynolds stress measurement and circuit design. This work was mainly supported by a Grant-in-Aid for Young Scientist (B) (18760637) of JSPS and a Grant-in-Aid for Specially-Promoted Research (16002005) [Itoh project] of MEXT, Japan. This work was partially supported by a Grant-in-Aid for Scientific Research (S) (21224014) of JSPS, Japan, and by the collaborations of NIFS (NIFS07KOAP017 and NIFS10KOAP023), RIAM of Kyushu University, and The University of Tokyo. One of the authors (Y.N.) would like to appreciate Mr. Tachikawa of Pascal Co., Ltd. for his help in construction of the probe system.

PY - 2011/3

Y1 - 2011/3

N2 - A new radially movable multichannel azimuthal probe system has been developed for measuring azimuthal and radial profiles of electrostatic Reynolds stress (RS) per mass density of microscale fluctuations for a cylindrical laboratory plasma. The system is composed of 16 probe units arranged azimuthally. Each probe unit has six electrodes to simultaneously measure azimuthal and radial electric fields for obtaining RS. The advantage of the system is that each probe unit is radially movable to measure azimuthal RS profiles at arbitrary radial locations as well as two-dimensional structures of fluctuations. The first result from temporal observation of fluctuation azimuthal profile presents that a low-frequency fluctuation (1-2 kHz) synchronizes oscillating Reynolds stress. In addition, radial scanning of the probe system simultaneously demonstrates two-dimensional patterns of mode structure and nonlinear forces with frequency f 1.5 kHz and azimuthal mode number m 1.

AB - A new radially movable multichannel azimuthal probe system has been developed for measuring azimuthal and radial profiles of electrostatic Reynolds stress (RS) per mass density of microscale fluctuations for a cylindrical laboratory plasma. The system is composed of 16 probe units arranged azimuthally. Each probe unit has six electrodes to simultaneously measure azimuthal and radial electric fields for obtaining RS. The advantage of the system is that each probe unit is radially movable to measure azimuthal RS profiles at arbitrary radial locations as well as two-dimensional structures of fluctuations. The first result from temporal observation of fluctuation azimuthal profile presents that a low-frequency fluctuation (1-2 kHz) synchronizes oscillating Reynolds stress. In addition, radial scanning of the probe system simultaneously demonstrates two-dimensional patterns of mode structure and nonlinear forces with frequency f 1.5 kHz and azimuthal mode number m 1.

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JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

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ER -

Development of radially movable multichannel Reynolds stress probe system for a cylindrical laboratory plasma

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