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Title: Compact, portable, laser induced fluorescence diagnostic for laboratory plasma sources

Journal Article · · Review of Scientific Instruments
DOI: https://doi.org/10.1063/5.0031217 · OSTI ID:1755897
ORCiD logo [1]; ORCiD logo [2];  [3];  [4];  [4]; ORCiD logo [5]; ORCiD logo [4];  [4]; ORCiD logo [2];  [4]; ORCiD logo [5]
  1. West Virginia Univ., Morgantown, WV (United States); WVU
  2. West Virginia Univ., Morgantown, WV (United States)
  3. West Virginia Univ., Morgantown, WV (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States)
  4. Auburn Univ., AL (United States)
  5. Univ. of California, San Diego, CA (United States)
+ Show Author Affiliations

As diagnostic groups are increasingly called upon to participate in experimental campaigns at remote facilities, there is a need to develop portable versions of plasma diagnostic systems. One such diagnostic is laser induced fluorescence (LIF). Here, we describe a portable LIF apparatus that eliminates the need for an optical table, beam splitters, and an optical chopper. All of the light exiting the laser system is coupled through optical fibers to the experiment and housekeeping diagnostics. Here, the collected light is coupled through an optical fiber as well. A key feature is modulation of the tapered amplifier current instead of physical modulation of the laser output. Using this portable LIF system, measurements of ion temperature, ion flow, and relative metastable ion density are reported for two different remote experiments.

Research Organization:
West Virginia Univ., Morgantown, WV (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Grant/Contract Number:
SC0020294
OSTI ID:
1755897
Journal Information:
Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 1 Vol. 92; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (5)

The magnetized dusty plasma experiment (MDPX) journal February 2015
Laser induced fluorescence measurements of ion velocity and temperature of drift turbulence driven sheared plasma flow in a linear helicon plasma device journal August 2012
Laser induced fluorescence measurements of axial velocity, velocity shear, and parallel ion temperature profiles during the route to plasma turbulence in a linear magnetized plasma device journal August 2016
Ion heating and flows in a high power helicon source journal June 2017
Confocal laser induced fluorescence with comparable spatial localization to the conventional method journal October 2017

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Laser induced fluorescence
Plasma diagnostics
Plasma sources