Two-Gaussian Fitting Method for Charge Exchange Spectroscopy on Measurements of Ion Temperature and Toroidal Plasma Flow Velocity in the KSTAR Tokamak

2020 ◽  
Vol 76 (7) ◽  
pp. 787-794
Author(s):  
H. H. Lee ◽  
J. K Lee ◽  
W. H. Ko
Keyword(s):  
Flow Velocity ◽  
Charge Exchange ◽  
Plasma Flow ◽  
Ion Temperature ◽  
Toroidal Plasma ◽  
Gaussian Fitting ◽  
Fitting Method ◽  
Exchange Spectroscopy

High time resolution ion temperature and rotation velocity measurements by charge exchange spectroscopy using three interference filters

1999 ◽  
Vol 70 (1) ◽  
pp. 372-374 ◽  
Author(s):  
J. S. Koog ◽  
A. Sakasai ◽  
Y. Koide ◽  
H. Shirai ◽  
Y. Kamada ◽  
...  
Keyword(s):  
Charge Exchange ◽  
Time Resolution ◽  
Rotation Velocity ◽  
High Time ◽  
High Time Resolution ◽  
Ion Temperature ◽  
Velocity Measurements ◽  
Interference Filters ◽  
Exchange Spectroscopy

Ultra-fast charge exchange spectroscopy for turbulent ion temperature fluctuation measurements on the DIII-D tokamak (invited)

2012 ◽  
Vol 83 (10) ◽  
pp. 10D526 ◽  
Author(s):  
I. U. Uzun-Kaymak ◽  
R. J. Fonck ◽  
G. R. McKee
Keyword(s):  
Charge Exchange ◽  
Temperature Fluctuation ◽  
Ion Temperature ◽  
Fast Charge ◽  
Exchange Spectroscopy

Charge exchange spectroscopy system calibration for ion temperature measurement in KSTAR

2010 ◽  
Vol 81 (10) ◽  
pp. 10D740 ◽  
Author(s):  
Won-Ha Ko ◽  
Hyungho Lee ◽  
Dongcheol Seo ◽  
Myeun Kwon
Keyword(s):  
Temperature Measurement ◽  
Charge Exchange ◽  
Ion Temperature ◽  
System Calibration ◽  
Exchange Spectroscopy ◽  
Spectroscopy System

Charge exchange spectroscopy measurements of ion temperature and toroidal rotation in JET

1989 ◽  
Vol 29 (12) ◽  
pp. 2187-2197 ◽  
Author(s):  
H. Weisen ◽  
M. von Hellermann ◽  
A. Boileau ◽  
L.D. Horton ◽  
W. Mandl ◽  
...  
Keyword(s):  
Charge Exchange ◽  
Ion Temperature ◽  
Toroidal Rotation ◽  
Exchange Spectroscopy

scholarly journals Measurement of derivative of ion temperature using high spatial resolution charge exchange spectroscopy with space modulation optics

2008 ◽  
Vol 79 (5) ◽  
pp. 053506 ◽  
Author(s):  
K. Ida ◽  
Y. Sakamoto ◽  
M. Yoshinuma ◽  
S. Inagaki ◽  
T. Kobuchi ◽  
...  
Keyword(s):  
Charge Exchange ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Ion Temperature ◽  
Exchange Spectroscopy ◽  
Space Modulation

The plasma/atmosphere interaction at Io: revisiting the ion/neutral charge-exchange cross-sections and their ion-velocity dependency

2020 ◽  
Author(s):  
Vincent Dols ◽  
Robert Johnson ◽  
Fran Bagenal
Keyword(s):  
Numerical Simulations ◽  
Flow Velocity ◽  
Charge Exchange ◽  
Cross Sections ◽  
Local Interaction ◽  
Ion Temperature ◽  
Atmosphere Interaction ◽  
Ion Velocity ◽  
Plasma Torus ◽  
Io Plasma Torus

<p>The Io Torus plasma is mostly composed of singly and multi-charged S and O ions. These ions interact with the neutrals of Io’s atmosphere (S, O, SO<sub>2</sub> and SO) through symmetrical (i.e. O<sup>+</sup> + O => O + O<sup>+</sup>) and asymmetrical (i.e. S<sup>++</sup> + O => S + O<sup>++</sup>) charge-exchanges. Charge-exchange cross-sections were estimated in Johnson & Strobel, 1982 and McGrath & Johnson, 1989 at 60 km/s (the plasma corotation velocity in Io’s frame), and are used in numerical simulations of the torus/neutral cloud interaction (i.e. Delamere and Bagenal, 2003).</p> <p>Dols et al., 2008 proposed numerical simulations of the multi-species chemistry interaction at Io using these cross-sections at 60 km/s. The plasma/atmosphere interaction at Io is strong and the flow velocity and ion temperature are drastically reduced close to Io (v < 10 km/s). Thus, velocity-dependent charge-exchange cross-sections are critical for such numerical simulations and their effect on the local plasma and neutral supply at Io should be explored.</p> <p>We propose to revisit the calculation of ion/neutral charge-exchange cross-sections following Johnson & Strobel, 1982’s approach for plasma velocities relevant to the local interaction at Io (V=10-120 km/s). More sophisticated calculations were proposed in McGrath & Johnson, 1989 but both publications offered very few details about their procedure.</p> <p>We will illustrate the effect of using velocity-depend charge-exchange cross-sections in numerical simulations of the multi-species plasma/atmosphere interaction at Io.</p> <p>More generally, this presentation aimed at providing an incentive for the community to expand the work of McGrath & Johnson, 1989.</p> <p> </p> <p><em>Johnson & Strobel, Charge-exchange in the Io torus and exosphere, JGR, 87,1982</em></p> <p><em>McGrath & Johnson, Charge exchange cross sections for the Io plasma torus, JGR, 94, 1989</em></p> <p><em>Delamere & Bagenal, Modeling variability of plasma conditions in the Io torus, JGR, 108, 2003</em></p> <p><em>Dols, Delamere, Bagenal, Kurth, Paterson, A multi-species chemistry model of Io’s local interaction with the plasma torus, JGR, 113, 2008</em></p>

Improved charge exchange spectroscopy on the Joint European Torus for ion temperature and rotation velocity profiles

2006 ◽  
Vol 77 (10) ◽  
pp. 10E913 ◽  
Author(s):  
Yasmin Andrew ◽  
N. C. Hawkes ◽  
K. Crombe ◽  
JET EFDA Contributors
Keyword(s):  
Charge Exchange ◽  
Rotation Velocity ◽  
Velocity Profiles ◽  
Ion Temperature ◽  
Exchange Spectroscopy

Density Dependence of Ion Temperature Measured by Active Charge-Exchange Spectroscopy in ECRH Plasmas of the TJ-II Stellarator

2008 ◽  
Vol 54 (4) ◽  
pp. 962-969 ◽  
Author(s):  
J. M. Carmona ◽  
K. J. McCarthy ◽  
V. Tribaldos ◽  
R. Balbín
Keyword(s):  
Density Dependence ◽  
Charge Exchange ◽  
Ion Temperature ◽  
Exchange Spectroscopy

scholarly journals Effect of energy dependent cross-section on flow velocity measurements with charge exchange spectroscopy in magnetized plasma

2019 ◽  
Vol 383 (12) ◽  
pp. 1293-1299 ◽  
Author(s):  
J. Chen ◽  
K. Ida ◽  
M. Yoshinuma ◽  
I. Murakami ◽  
T. Kobayashi ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Cross Section ◽  
Charge Exchange ◽  
Magnetized Plasma ◽  
Velocity Measurements ◽  
Exchange Spectroscopy ◽  
Energy Dependent
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