Laser induced fluorescence measurements of ion velocity and temperature of drift turbulence driven sheared plasma flow in a linear helicon plasma device

S. Chakraborty Thakur; D. McCarren; T. Lee; N. Fedorczak; P. Manz; E. E. Scime; G. R. Tynan; M. Xu

doi:10.1063/1.4742178

journal article Aug 01, 2012

Laser induced fluorescence measurements of ion velocity and temperature of drift turbulence driven sheared plasma flow in a linear helicon plasma device

S. Chakraborty Thakur D. McCarren T. Lee

N. Fedorczak P. Manz E. E. Scime G. R. Tynan M. Xu

Physics of Plasmas Vol. 19 No. 8 · AIP Publishing

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Abstract

Using laser induced fluorescence (LIF), radial profiles of azimuthal ion fluid velocity and ion temperature are measured in the controlled shear de-correlation experiment (CSDX) linear helicon plasma device. Ion velocities and temperatures are derived from the measured Doppler broadened velocity distribution functions of argon ions. The LIF system employs a portable, high power (&gt;300 mW), narrowband (∼1 MHz) tunable diode laser-based system operating at 668.614 nm. Previous studies in CSDX have shown the existence of a radially sheared azimuthal flow as measured with time delay estimation methods and Mach probes. Here, we report the first LIF measurements of sheared plasma fluid flow in CSDX. Above a critical magnetic field, the ion fluid flow profile evolves from radially uniform to peaked on axis with a distinct reversed flow region at the boundary, indicating the development of a sheared azimuthal flow. Simultaneously, the ion temperature also evolves from a radially uniform profile to a profile with a gradient. Measurements in turbulent and coherent drift wave mode dominated plasmas are compared.

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References

30

[1]

Rev. Mod. Phys. (1999) 10.1103/revmodphys.71.735

[2]

Plasma Phys. Controlled Fusion (2009) 10.1088/0741-3335/51/11/113001

[3]

Zonal flows in plasma—a review

P H Diamond, S-I Itoh, K Itoh et al.

Plasma Physics and Controlled Fusion 2005 10.1088/0741-3335/47/5/r01

[4]

Phys. Rev. Lett. (2006) 10.1103/physrevlett.96.195002

[5]

Plasma Phys. Controlled Fusion (2006) 10.1088/0741-3335/48/4/s05

[6]

Phys. Plasmas (2008) 10.1063/1.2985836

[7]

Phys. Plasmas (2009) 10.1063/1.3098538

[8]

Phys. Plasmas (2010) 10.1063/1.3325397

[9]

Phys. Plasmas (2010) 10.1063/1.3322823

[10]

Phys. Plasmas (2009) 10.1063/1.3078075

[11]

J. Nucl. Mater. (2009) 10.1016/j.jnucmat.2009.01.093

[12]

Phys. Plasmas (2009) 10.1063/1.3059410

[13]

Phys. Plasmas (2005) 10.1063/1.1889443

[14]

Plasma Phys. Controlled Fusion (2011) 10.1088/0741-3335/53/9/095001

[15]

Nucl. Fusion (1991) 10.1088/0029-5515/31/9/010

[16]

Plasma Phys. Controlled Fusion (1970) 10.1088/0741-3335/26/10/001

[17]

Phys. Plasmas (2005) 10.1063/1.1846077

[18]

Phys. Plasmas (2006) 10.1063/1.2234287

[19]

Rev. Sci. Instrum. (2004) 10.1063/1.1787166

[20]

Appl. Phys. Lett. (2007) 10.1063/1.2786601

[21]

Rev. Sci. Instrum. (2007) 10.1063/1.2813880

[22]

J. Vac. Sci. Technol. A (1997) 10.1116/1.580844

[23]

Plasma Sources Sci. Technol. (1994) 10.1088/0963-0252/3/2/006

[24]

(2002)

[25]

(2002)

[26]

Phys. Fluids B (1991) 10.1063/1.859681

[27]

Phys. Rev. Lett. (1983) 10.1103/physrevlett.50.682

[28]

Plasma Phys. Controlled Fusion (2009) 10.1088/0741-3335/51/3/035008

[29]

Rev. Sci. Instrum. (2006) 10.1063/1.2219440

[30]

Plasma Sources Sci. Technol. (2007) 10.1088/0963-0252/16/4/008

Metrics

32

Citations

30

References

Details

Published: Aug 01, 2012
Vol/Issue: 19(8)

Authors

S

S. Chakraborty Thakur

University of California at San Diego 1 Center for Momentum Transport and Flow Organization, , San Diego, California 92093, USA; University of California at San Diego 2 Center for Energy Research, , San Diego, California 92093, USA

D

D. McCarren

West Virginia University 3 Department of Physics, , Morgantown, West Virginia 26506, USA

T

T. Lee

University of California at San Diego 2 Center for Energy Research, , San Diego, California 92093, USA

N

N. Fedorczak

University of California at San Diego 1 Center for Momentum Transport and Flow Organization, , San Diego, California 92093, USA; University of California at San Diego 2 Center for Energy Research, , San Diego, California 92093, USA

P

P. Manz

University of California at San Diego 1 Center for Momentum Transport and Flow Organization, , San Diego, California 92093, USA; University of California at San Diego 2 Center for Energy Research, , San Diego, California 92093, USA

E

E. E. Scime

West Virginia University 3 Department of Physics, , Morgantown, West Virginia 26506, USA

G

G. R. Tynan

University of California at San Diego 1 Center for Momentum Transport and Flow Organization, , San Diego, California 92093, USA; University of California at San Diego 2 Center for Energy Research, , San Diego, California 92093, USA

M

M. Xu

University of California at San Diego 1 Center for Momentum Transport and Flow Organization, , San Diego, California 92093, USA; University of California at San Diego 2 Center for Energy Research, , San Diego, California 92093, USA

Cite This Article

S. Chakraborty Thakur, D. McCarren, T. Lee, et al. (2012). Laser induced fluorescence measurements of ion velocity and temperature of drift turbulence driven sheared plasma flow in a linear helicon plasma device. Physics of Plasmas, 19(8). https://doi.org/10.1063/1.4742178

Laser induced fluorescence measurements of ion velocity and temperature of drift turbulence driven sheared plasma flow in a linear helicon plasma device

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