Band intensity and line half-width measurements in N2O near 4.5μ

1972 ◽  
Vol 12 (5) ◽  
pp. 873-880 ◽  
Author(s):  
J.E. Lowder
Keyword(s):  
Half Width ◽  
Band Intensity ◽  
Line Half Width ◽  
Width Measurements

ABSORPTION-LINE BROADENING IN BORON-DOPED SILICON

1967 ◽  
Vol 45 (8) ◽  
pp. 2797-2804 ◽  
Author(s):  
J. J. White
Keyword(s):  
Absorption Line ◽  
Excited States ◽  
Half Width ◽  
Line Broadening ◽  
Additional Information ◽  
Boron Doped ◽  
Doped Silicon ◽  
Time Part ◽  
Width Measurements ◽  
First Time

In boron-doped silicon, the excitation of bound holes from the acceptor ground state to the excited states leads to an infrared absorption-line spectrum. In a recent half-width study of the boron absorption lines, Colbow (1963) separated the various line-broadening contributions for the first time. Part of Colbow's half-widths is now found to be due to external strains introduced by the sample mounting. New half-width measurements of "strain-free" mounted boron-doped silicon are presented, Colbow's work is corrected, and additional information regarding the various broadening contributions is given.

scholarly journals Non-LTE Modeling and Observations of Oscillating Prominences

2013 ◽  
Vol 8 (S300) ◽  
pp. 52-55
Author(s):  
M. Zapiór ◽  
P. Heinzel ◽  
R. Oliver ◽  
J. L. Ballester ◽  
P. Kotrč
Keyword(s):  
Line Intensity ◽  
Doppler Shift ◽  
Half Width ◽  
Doppler Velocity ◽  
Line Half Width ◽  
Linear Perturbations ◽  
The Relationship

AbstractProminence oscillations have been mostly detected using Doppler velocity, although there are also claimed detections by means of the periodic variations of half-width or line intensity. Our main aim here is to explore the relationship between spectral indicators such as Doppler shift, line intensity and line half-width and the linear perturbations excited in a simple prominence model.

Rotational Dependence of Line Half-width for 0 0 0 11–0 0 0 01 Fundamental Band of CO2 Confined in Aerogel Nanopores

2019 ◽  
Vol 32 (6) ◽  
pp. 619-621
Author(s):  
A. A. Solodov ◽  
T. M. Petrova ◽  
Yu. N. Ponomarev ◽  
A. M. Solodov ◽  
A. S. Shalygin
Keyword(s):  
Half Width ◽  
Fundamental Band ◽  
Line Half Width

A Comparative Study of Electron Density Determination Methodologies in the Helium Microwave-Induced Plasma

1989 ◽  
Vol 43 (4) ◽  
pp. 621-626 ◽  
Author(s):  
John M. Workman ◽  
Harry B. Fannin ◽  
Peter G. Brown ◽  
Joseph A. Caruso
Keyword(s):  
Line Shape ◽  
Atmospheric Pressure ◽  
Maximum Intensity ◽  
Half Width ◽  
Balmer Line ◽  
Electron Number ◽  
Microwave Induced Plasma ◽  
Intensity Measurements ◽  
Line Shape Analysis ◽  
Width Measurements

Electron number densities were examined in a low-power atmospheric-pressure helium microwave-induced plasma. Two hydrogen-based methods and two helium-based methods were employed to estimate electron concentration. The hydrogen 4471 Å Balmer line was examined with the use of both line shape and full width at half-maximum intensity measurements. The data suggest that half-width calculations underestimate electron densities. Half-width measurements of neutral helium lines result in number densities which appear to be overestimated. This inaccuracy is thought to be the result of apparatus broadening. Finally, the use of quasi-degenerate helium neutral lines possessing forbidden and allowed components afforded electron concentrations similar to those derived from the Balmer beta line shape analysis.

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