He-Ne laser gain dependence on discharge current and gas pressure from resonant Faraday effect

This paper is reviewing the amplification of XUV radiation at 519.7 and 498.5 Å with a gain-length product of 2.5 and 2.2 for the 4f-3d and 4d-3p transition in an oxygen Z-pinch plasma. Time resolved measurements of the O VI (519.7 Å) transition were performed and the dependence of the line intensity on the discharge current and initial gas pressure is reported.

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Emission characteristics of laser ablation-hollow cathode glow discharge spectral source

Open Chemistry ◽

10.1515/chem-2015-0026 ◽

2014 ◽

Vol 13 (1) ◽

Author(s):

Stefan Karatodorov ◽

Valentin Mihailov ◽

Margarita Grozeva

Keyword(s):

Laser Ablation ◽

Glow Discharge ◽

Hollow Cathode ◽

Discharge Current ◽

Spatial Separation ◽

Gas Pressure ◽

Hollow Cathode Discharge ◽

Sample Introduction ◽

Emission Characteristics ◽

Sample Material

AbstractThe emission characteristics of a scheme combining laser ablation as sample introduction source and hollow cathode discharge as excitation source are presented. The spatial separation of the sample material introduction by laser ablation and hollow cathode excitation is achieved by optimizing the gas pressure and the sample-cathode gap length. At these conditions the discharge current is maximized to enhance the analytical lines intensity.

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Parametric Study of a Low-Pressure Theta-Pinch Discharge in Argon for Preliminary Analytical Optimization

Applied Spectroscopy ◽

10.1366/0003702894203859 ◽

1989 ◽

Vol 43 (6) ◽

pp. 991-997 ◽

Cited By ~ 5

Author(s):

Jeffrey S. White ◽

Gae Ho Lee ◽

Alexander Scheeline

Keyword(s):

Discharge Current ◽

Parametric Study ◽

Low Pressure ◽

Gas Pressure ◽

Discharge Energy ◽

Current Waveform ◽

Theta Pinch ◽

Discharge Gas

The qualitative dependence of spectrochemical performance of a thetapinch discharge on a variety of experimental variables including discharge gas pressure, sample positioning, discharge energy, and discharge current waveform is reported.

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On the relation between discharge current and optimum gas pressure in hollow cathode lasers

Optics Communications ◽

10.1016/0030-4018(90)90357-y ◽

1990 ◽

Vol 78 (3-4) ◽

pp. 259-262 ◽

Cited By ~ 3

Author(s):

P. Mezei ◽

P. Apai ◽

M. Jánossy ◽

K. Rózsa

Keyword(s):

Hollow Cathode ◽

Discharge Current ◽

Gas Pressure

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Measurements of Rotational Temperatures in the Hollow Cathode Discharge

Applied Spectroscopy ◽

10.1366/0003702814731905 ◽

1981 ◽

Vol 35 (1) ◽

pp. 57-59 ◽

Cited By ~ 7

Author(s):

J. S. Dobrosavljević ◽

D. S. Pešić

Keyword(s):

Comparative Study ◽

Hollow Cathode ◽

Discharge Current ◽

Pressure Range ◽

Gas Pressure ◽

Hollow Cathode Discharge

Rotational temperatures in the uncooled hollow cathode discharge (HCD) have been measured. Using rotational lines of the OH (0,0) band, the temperatures were measured in a helium fill gas pressure range from 266 to 2130 Pa and in the discharge current between 0.1 and 0.3 A. A comparative study of these temperatures with gas and excitation temperatures in HCD is presented.

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Effect of working gas pressure on mass-to-charge composition of plasma ions in high-current planar magnetron discharge

Journal of Physics Conference Series ◽

10.1088/1742-6596/2064/1/012121 ◽

2021 ◽

Vol 2064 (1) ◽

pp. 012121

Author(s):

M V Shandrikov ◽

A V Vizir ◽

A S Klimov ◽

E M Oks ◽

V P Frolova

Keyword(s):

Discharge Current ◽

Axial Direction ◽

Plasma Electron ◽

Gas Pressure ◽

Charge Composition ◽

Operating Pressure ◽

Working Pressure ◽

Magnetron Discharge ◽

Plasma Ions ◽

Planar Magnetron

Abstract The mass-to-charge ion composition of a planar magnetron discharge plasma has been investigated. The measurements used a modified quadrupole mass-spectrometer and a time-of-flight spectrometer. The experiments were carried out on a copper magnetron target. Argon was used as a working gas. The operating pressure was 0.15÷1.3 Pa. The discharge current was 1÷20 A with a pulse duration of 30÷50 μs. The influence of main operating parameters (discharge current and working gas pressure) on mass-to-charge composition of plasma ions was measured. The mass-to-charge composition of plasma ions in the axial direction was measured as a function of working pressure. Plasma electron temperature was measured and its effect on the mass-to-charge composition of magnetron plasma ions was estimated.

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