Speed-dependent narrowing of the 687.1 nm argon line perturbed by neon

1999 ◽  
Author(s):  
A. Bielski ◽  
S. Brym ◽  
R. Ciuryl̸o ◽  
J. Szudy
Keyword(s):  
Argon Line

Mass motion and heating in a magnetic neutral point system

1974 ◽  
Vol 11 (1) ◽  
pp. 93-98 ◽  
Author(s):  
P. J. Baum ◽  
A. Bratenahl
Keyword(s):  
Plasma Heating ◽  
Neutral Point ◽  
Mass Motion ◽  
Point System ◽  
Line Profiles ◽  
Time Resolved ◽  
Doppler Shifts ◽  
Argon Line ◽  
The One

We present optical spectroscopic and magnetic probe observations of a laboratory discharge device, in which magnetic field line reconnexion occurs at an x−type neutral point. Time-resolved spectral-line profiles of the ionized argon line A II λ4348 are presented. These allow the determination of Doppler shifts and broadenings near the neutral point. Plasma heating occurs at the neutral point and downstream from it. Plasma is ejected from the downstream sides of the neutral point region at the local Alfvén speed at all times. This is equal to about one-tenth the upstream Alfvén speed at the one time it is known. The downstream magnetic Mach number or ‘local reconnexion rate’ is found to be nearly independent of the plasma conductivity and time. The rate of transfer of magnetic flux from the upstream to downstream regions is strongly dependent on conductivity and time.

Helium and argon line broadening in the ν2 band of CH4

2004 ◽  
Vol 225 (2) ◽  
pp. 123-131 ◽  
Author(s):  
T. Gabard ◽  
I.M. Grigoriev ◽  
N.M. Grigorovich ◽  
M.V. Tonkov
Keyword(s):  
Line Broadening ◽  
Argon Line

Pressure effects on the 506 nm argon line

1991 ◽  
Vol 44 (2) ◽  
pp. 141-144 ◽  
Author(s):  
A Bielski ◽  
R S Trawinski ◽  
J Wolnikowski ◽  
J Szudy
Keyword(s):  
Pressure Effects ◽  
Argon Line

Effects of ion dynamics and opacity on Stark-broadened argon line profiles

1996 ◽  
Vol 53 (1) ◽  
pp. 1042-1050 ◽  
Author(s):  
D. A. Haynes ◽  
D. T. Garber ◽  
C. F. Hooper ◽  
R. C. Mancini ◽  
Y. T. Lee ◽  
...  
Keyword(s):  
Ion Dynamics ◽  
Line Profiles ◽  
Argon Line

Parameters Involved in the Spectroscopic Monitoring of Atmospheric Contaminants in the Tungsten—Inert Gas Arc Process

1970 ◽  
Vol 24 (5) ◽  
pp. 526-529 ◽  
Author(s):  
E. L. Grove ◽  
W. A. Loseke
Keyword(s):  
Graphite Electrode ◽  
Spectral Response ◽  
Internal Standard ◽  
Emission Lines ◽  
Arc Length ◽  
Hot Metal ◽  
Spectroscopic Monitoring ◽  
The Difference ◽  
Argon Line ◽  
Spectral Monitoring

The parameters involved in the spectral monitoring of atmospheric contaminants in the tungsten–helium arc process were studied under welding conditions. An internal standard was necessary because small variations in arc length, current, condition of metal surface, alloy, the portion of the arc in the aperture, etc. resulted in relatively large variations in spectral response, proportionally much greater than for those same parameters in conventional low current–graphite electrode spectroscopy. Only the argon line internal standard was satisfactory. Warping of the work metal caused the arc to change in space, so a side arm mount for the torch was designed to carry the entrance optics. The high and varying background that resulted from electrode reflections, glowing oxide particulate, focus on hot metal, and possible radiation from the electrode tip required the use of a rotating circular wedge to oscillate the emission lines across the exit slits. Alternating current electronics amplified the difference in signal levels.

Observations of visible argon line emissions and its spatial profile from Aditya-U tokamak plasma

2021 ◽  
Vol 92 (5) ◽  
pp. 053548
Author(s):  
K. Shah ◽  
J. Ghosh ◽  
G. Shukla ◽  
M. B. Chowdhuri ◽  
R. Manchanda ◽  
...  
Keyword(s):  
Tokamak Plasma ◽  
Spatial Profile ◽  
Argon Line

Helium-like Argon Line Emission in Solar Flares

1993 ◽  
Vol 419 ◽  
pp. 426 ◽  
Author(s):  
K. J. H. Phillips ◽  
L. K. Harra ◽  
F. P. Keenan ◽  
D. M. Zarro ◽  
M. Wilson
Keyword(s):  
Solar Flares ◽  
Line Emission ◽  
Argon Line

Experimental study of speed-dependent collisional effects of He and Ne on the 687.1 nm argon line

2000 ◽  
Vol 8 (2) ◽  
pp. 177-187 ◽  
Author(s):  
A. Bielski ◽  
S. Brym ◽  
R. Ciurylo ◽  
J. Szudy
Keyword(s):  
Experimental Study ◽  
Argon Line
Sign in / Sign up

Export Citation Format

Share Document