Noise in atomic-absorption measurements with pulsed-current-fed hollow cathode tubes

1977 ◽  
Vol 26 (4) ◽  
pp. 427-430
Author(s):  
M. A. Kabanova ◽  
�. N. Sautina
Keyword(s):  
Atomic Absorption ◽  
Hollow Cathode ◽  
Pulsed Current ◽  
Absorption Measurements

Atomic Absorption Measurements in a Q-Switched Laser Plume Using Pulsed Hollow Cathode Lamps

1973 ◽  
Vol 27 (3) ◽  
pp. 165-170 ◽  
Author(s):  
D. E. Osten ◽  
E. H. Piepmeier
Keyword(s):  
Aluminum Alloy ◽  
Laser Beam ◽  
Atomic Absorption ◽  
Hollow Cathode ◽  
Laser Energy ◽  
Laser Plume ◽  
Calibration Curves ◽  
Absorption Characteristics ◽  
Absorption Measurements

Quantitative atomic absorption measurements on transient plasmas induced by a Q-switched laser beam were made using pulsed hollow cathode lamps. Calibration curves were obtained for 0.002 to 0.15% Cu in an aluminum alloy and 0.013 to 0.124% Mn in graphite pellets. The dependence of the atomic absorption characteristics upon changes in laser energy and upon atmospheric gas and pressure is discussed.

Study of the width of the mercury line at ?=253.7 nm in a light source for atomic-absorption measurements

1977 ◽  
Vol 27 (3) ◽  
pp. 1214-1214 ◽  
Author(s):  
�. L. Al'tman ◽  
A. A. Ganeev ◽  
Yu. I. T�rkin ◽  
S. E. Sholupov
Keyword(s):  
Atomic Absorption ◽  
Light Source ◽  
Absorption Measurements

Spatial Distribution of Radiant Intensity from Primary Sources for Atomic Absorption Spectrometry. Part I: Hollow Cathode Lamps

1995 ◽  
Vol 49 (4) ◽  
pp. 413-424 ◽  
Author(s):  
Albert Kh. Gilmutdinov ◽  
Bernard Radziuk ◽  
Michael Sperling ◽  
Bernhard Welz ◽  
Konstantin Yu. Nagulin
Keyword(s):  
Spatial Distribution ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Intensity Distribution ◽  
Hollow Cathode ◽  
Imaging System ◽  
Absorption Spectrometry ◽  
Operating Conditions ◽  
Radiant Intensity ◽  
Warm Up

The spatial distribution of radiant intensity from hollow cathode lamps used as radiation sources in atomic absorption spectrometry is investigated with a digital photodiode array imaging system. Intensity distribution over the cross section of each lamp is measured for both atomic and ionic lines of the analyte and the filler gas. The shape of the distribution is strongly dependent on the hollow cathode diameter. In small cathodes the distribution has the shape of a paraboloid with maximum intensity at the hollow cathode axis for all of the recorded lines. The intensity distributions of lines emitted from large cathodes are nonparaboloid and in some cases have a minimum at the cathode axis and a maximum concentric to the cathode walls. It is shown that the intensity distribution for a given lamp has practically the same shape for all currents applied. Data on the evolution of the intensity distribution during warm-up of the lamps and under various operating conditions are presented.

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