scholarly journals Tables of spectral-line intensities :

1961 ◽  
Author(s):  
William F Meggers ◽  
Charles H Corliss ◽  
Bourdon F Scribner
Keyword(s):  
Spectral Line ◽  
Line Intensities

On the Inhomogeneity of Chemical Composition over the Surface of 21 Per

1976 ◽  
Vol 32 ◽  
pp. 343-349
Author(s):  
Yu.V. Glagolevsky ◽  
K.I. Kozlova ◽  
V.S. Lebedev ◽  
N.S. Polosukhina
Keyword(s):  
Chemical Composition ◽  
Spectral Line ◽  
Variable Star ◽  
Radial Velocities ◽  
Crimean Astrophysical Observatory ◽  
Line Intensities ◽  
Magnetic Variable

SummaryThe magnetic variable star 21 Per has been studied from 4 and 8 Å/mm spectra obtained with the 2.6 - meter reflector of the Crimean Astrophysical Observatory. Spectral line intensities (Wλ) and radial velocities (Vr) have been measured.

Atomic data and spectral line intensities for Ni XVII

2011 ◽  
Vol 97 (3) ◽  
pp. 189-224 ◽  
Author(s):  
A.K. Bhatia ◽  
E. Landi
Keyword(s):  
Spectral Line ◽  
Atomic Data ◽  
Line Intensities

scholarly journals Excitation and analytical characteristics of an ethanol loaded U-shaped arc

2003 ◽  
Vol 68 (2) ◽  
pp. 109-118 ◽  
Author(s):  
Marija Raskovic ◽  
Ivanka Holclajtner-Antunovic ◽  
Mirjana Tripkovic ◽  
Dragan Markovic
Keyword(s):  
Spectral Line ◽  
Electron Number Density ◽  
Ethanol Solution ◽  
Number Density ◽  
Electron Number ◽  
Plasma Parameters ◽  
Line Intensities ◽  
Ethanol Addition ◽  
Plasma Characteristics ◽  
Dc Arc

The effect of the ethanol load on the discharge and analytical parameters of an argon stabilized U-shaped DC arc has been recorded. Measurements of the radial distribution of the apparent temperatures and the electron number density of the DC plasma showed that ethanol addition causes a decrease in both plasma parameters. The changes in the plasma characteristics, as well as in transport and atomisation processes of the analyte cause a general change in the spectral line intensities, which depends on the physical characteristics of the analyte and the quantity of ethanol loaded into the plasma. Improved detection limits were obtained for V and Mn when a 10%(v/v) water?ethanol solution was nebulized into the plasma.

A Direct-Reading Polychromator for Emission Spectroscopy

1969 ◽  
Vol 23 (3) ◽  
pp. 260-263 ◽  
Author(s):  
Edwin S. Beatrice ◽  
David Glick
Keyword(s):  
Spectral Line ◽  
Emission Spectroscopy ◽  
Ruby Laser ◽  
Photomultiplier Tube ◽  
Photographic Recording ◽  
Direct Reading ◽  
Line Intensities ◽  
Laser Microprobe

Construction and use of a photomultiplier-tube direct-reading polychromator for emission spectroscopy is described for application to measurement of spectral line intensities from plumes generated by a ruby laser microprobe. Simultaneous correction for background adjacent to each spectral line measured is provided. Advantages include capability of external precision alignment and the use of optically and electronically matched components for recording the line and background intensities. Although the unit is adaptable to commercial spectrographs, the polychromator constructed was made to fit a Czerny-Turner, f/6.3, emission spectrograph (Jarrell-Ash Co., Waltham, Mass.) which had been designed for photographic recording.

Atomic data and spectral line intensities for S IX

2003 ◽  
Vol 85 (1) ◽  
pp. 169-253 ◽  
Author(s):  
A.K. Bhatia ◽  
E. Landi
Keyword(s):  
Spectral Line ◽  
Atomic Data ◽  
Line Intensities

Atomic Data and Spectral Line Intensities for Fe X

1995 ◽  
Vol 60 (1) ◽  
pp. 97-143 ◽  
Author(s):  
A.K. Bhatia ◽  
G.A. Doschek
Keyword(s):  
Spectral Line ◽  
Atomic Data ◽  
Line Intensities

scholarly journals Capabilities of bisector analysis of the Si I 10 827 Å line for estimating line-of-sight velocities in the quiet Sun

2020 ◽  
Vol 634 ◽  
pp. A19 ◽  
Author(s):  
S. J. González Manrique ◽  
C. Quintero Noda ◽  
C. Kuckein ◽  
B. Ruiz Cobo ◽  
M. Carlsson
Keyword(s):  
Spectral Line ◽  
Line Profile ◽  
Line Of Sight ◽  
Solar Telescope ◽  
Simple Method ◽  
Quiet Sun ◽  
Line Intensities ◽  
Line Core ◽  
Reference Images ◽  
Non Local

We examine the capabilities of a fast and simple method to infer line-of-sight (LOS) velocities from observations of the photospheric Si I 10 827 Å line. This spectral line is routinely observed together with the chromospheric He I 10 830 Å triplet as it helps to constrain the atmospheric parameters. We study the accuracy of bisector analysis and a line core fit of Si I 10 827 Å. We employ synthetic profiles starting from the Bifrost enhanced network simulation. The profiles are computed solving the radiative transfer equation, including non-local thermodynamic equilibrium effects on the determination of the atomic level populations of Si I. We found a good correlation between the inferred velocities from bisectors taken at different line profile intensities and the original simulation velocity at given optical depths. This good correlation means that we can associate bisectors taken at different line-profile percentages with atmospheric layers that linearly increase as we scan lower spectral line intensities. We also determined that a fit to the line-core intensity is robust and reliable, providing information about atmospheric layers that are above those accessible through bisectors. Therefore, by combining both methods on the Si I 10 827 Å line, we can seamlessly trace the quiet-Sun LOS velocity stratification from the deep photosphere to higher layers until around logτ = −3.5 in a fast and straightforward way. This method is ideal for generating quick-look reference images for future missions like the Daniel K. Inoue Solar Telescope and the European Solar Telescope, for example.

Atomic Data and Spectral Line Intensities for C-Like Mg VII

1995 ◽  
Vol 60 (1) ◽  
pp. 145-173 ◽  
Author(s):  
A.K. Bhatia ◽  
G.A. Doschek
Keyword(s):  
Spectral Line ◽  
Atomic Data ◽  
Line Intensities
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