Density measurements using coherence imaging spectroscopy based on Stark broadening

2010 ◽  
Vol 81 (10) ◽  
pp. 10E521 ◽  
Author(s):  
O. Lischtschenko ◽  
K. Bystrov ◽  
G. De Temmerman ◽  
J. Howard ◽  
R. J. E. Jaspers ◽  
...  
Keyword(s):  
Imaging Spectroscopy ◽  
Stark Broadening ◽  
Density Measurements ◽  
Coherence Imaging

Coherence-imaging spectroscopy for 2D distribution of ion temperature and flow velocity in a laboratory magnetosphere

2018 ◽  
Vol 89 (10) ◽  
pp. 10D133 ◽  
Author(s):  
K. Nakamura ◽  
M. Nishiura ◽  
N. Takahashi ◽  
Z. Yoshida ◽  
N. Kenmochi ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Imaging Spectroscopy ◽  
Ion Temperature ◽  
Coherence Imaging

scholarly journals Coherence imaging spectroscopy at Wendelstein 7-X for impurity flow measurements

2020 ◽  
Vol 91 (1) ◽  
pp. 013501
Author(s):  
Valeria Perseo ◽  
Dorothea Gradic ◽  
Ralf König ◽  
Oliver P. Ford ◽  
Carsten Killer ◽  
...  
Keyword(s):  
Imaging Spectroscopy ◽  
Flow Measurements ◽  
Coherence Imaging

Tomography of emissivity for Doppler coherence imaging spectroscopy diagnostic on HL-2A

2021 ◽  
Author(s):  
Bingli Li ◽  
Tian Bo Wang ◽  
Lin Nie ◽  
Ting Long ◽  
Zijie Liu ◽  
...  
Keyword(s):  
Imaging Spectroscopy ◽  
Coherence Imaging

scholarly journals Direct Comparison of Electron Density Measurements in Laser-Created Plasmas Using Stark Broadening and Satellite Line Intensities

1984 ◽  
Vol 86 ◽  
pp. 242-245
Author(s):  
Ph. Alaterre ◽  
P. Audebert ◽  
J.P. Geindre ◽  
P. Monier ◽  
C. Popovics ◽  
...  
Keyword(s):  
Electron Density ◽  
Electric Fields ◽  
Second Harmonic ◽  
Pulse Length ◽  
Target Surface ◽  
Carbon Substrate ◽  
Stark Broadening ◽  
Satellite Line ◽  
Density Measurements ◽  
Line Intensities

Spectral line profiles, broadened mostly by Stark effects from electric fields produced by charge particles, and diélectronic satellite line intensities have recently been used for determining electron densities in the dense region of laser-created plasmas. We present here a direct comparison of electron density measurements in the conduction region of laser created plasmas on a plane target using these two techniques.Experiments were carried at the GRECO laser facility, using the Nd phosphate glass laser at its second harmonic (0.53 μm) and 600 ps pulse length. The laser was focused on a 160 μm focal spot in which was centered a 25 or 50 μm diameter aluminum dot implanted on a carbon substrate. Laser intensities were in the range 1 × 1014−3 × 1014 W/cm2. The ls4p−ls2 He-like transition, the 4p−ls H-like transition and the Ly c satellites were recorded on the same spectrum with a PET flat crystal spectrograph. Spot spectroscopy provided quasi-homogeneity and low reabsorption along the line of sight which was tilted 7° out the target surface. 3 μm resolution along the laser axis was obtained with an imaging knife-edge placed 1 mm apart from the target.

scholarly journals A new calibration implementation for Doppler Coherence Imaging Spectroscopy

2019 ◽  
Vol 146 ◽  
pp. 995-998 ◽  
Author(s):  
Dorothea Gradic ◽  
Valeria Perseo ◽  
Ralf König ◽  
David Ennis
Keyword(s):  
Imaging Spectroscopy ◽  
Coherence Imaging

Electron density measurements of atmospheric-pressure non-thermal N2 plasma jet by Stark broadening and irradiance intensity methods

2014 ◽  
Vol 21 (5) ◽  
pp. 053510 ◽  
Author(s):  
Dezhi Xiao ◽  
Cheng Cheng ◽  
Jie Shen ◽  
Yan Lan ◽  
Hongbing Xie ◽  
...  
Keyword(s):  
Electron Density ◽  
Atmospheric Pressure ◽  
Plasma Jet ◽  
Stark Broadening ◽  
Density Measurements ◽  
N2 Plasma

Publisher’s Note: “Coherence imaging spectroscopy at Wendelstein 7-X for impurity flow measurements” [Rev. Sci. Instrum. 91, 013501 (2020)]

2020 ◽  
Vol 91 (2) ◽  
pp. 029901
Author(s):  
Valeria Perseo ◽  
Dorothea Gradic ◽  
Ralf König ◽  
Oliver P. Ford ◽  
Carsten Killer ◽  
...  
Keyword(s):  
Imaging Spectroscopy ◽  
Flow Measurements ◽  
Coherence Imaging
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