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VI/73 Atomic Spectral Lines Data OII, Mg, Al, S, Sc (NIST 1993)
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A Compilation of Energy Levels and Wavelengths for the Spectrum of Singly-
Ionized Oxygen (O ii)
Martin W.C., Kaufman V., Musgrove A.
<J. Phys. Chem. Ref. Data, Vol. 22, No. 5, p. 1179 (1993)>
=1993JPCRD..22.1179M
Wavelengths and Energy Level Classifications of Magnesium Spectra for All Stages
of Ionization (Mg I through XII)
Kaufman V., Martin W.C.
<J. Phys. Chem. Ref. Data, Vol. 20, p. 83 (1991)>
=1991JPCRD..20...83K
Wavelengths and Energy Level Classifications for the Spectra of Aluminum (Al I
through Al XIII)
Kaufman V., Martin W.C.
<J. Phys. Chem. Ref. Data, Vol. 20, No. 5, p. 775 (1991)>
=1991JPCRD..20..775K
Energy Levels of Sulfur, S I through S XVI
Martin W.C., Zalubas R., Musgrove A.
<J. Phys. Chem. Ref. Data, Vol. 19, 821 (1990)>
=1991JPCRD..20..205M
Wavelength and Energy Level Classifications of Scandium Spectra for All Stages
of Ionization
Kaufman V., Sugar J.
<J. Phys. Chem. Ref. Data, Vol. 17, p. 1679 (1988)>
=1988JPCRD..17.1679K
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ADC_Keywords: Atomic physics
Keywords: NIST, Atomic Spectral Line Data
Description:
Atomic Spectral Lines Data O II, Mg I-XII, Al I-XIII, S I-XVI, Sc
I-XXI. Using recent critical compilations of atomic energy levels, the
authors calculate wavelengths (or wave numbers) from the differences
of the energy levels. Results are given along with the observed values
for all classified lines. Unless otherwise noted, the calculated
values are in general more accurate than the observed values wherever
the two values differ significantly. Some observed lines are
classified as unresolved blends of two or more transitions. The
calculated wavelength for each of the main components of such a blend
is listed, or in some cases the calculated wavelength of the probable
strongest component.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
lines.dat 205 14848 spectral line data for OII, MgI-XII, AlI-XIII,
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Byte-by-byte Description of file: lines.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- At_sym *Atomic element
3- 4 A2 --- Spect_No *Stage of Ionization
5- 11 A7 --- Mult_No *Multiplet Number
13- 20 A8 --- Intens *Relative Intensity
22- 24 A3 --- Code *Typesetting Code
26- 36 F11.5 0.1nm Obs_Wave *?Observed Wavelength
38- 49 F12.6 0.1nm CalcWave *?Calculated Wavelength
51- 60 F10.5 cm-1 Obs_WNum ?Observed Wave Number
62- 69 F8.3 cm-1 CalcWNum ?Calculated Wave Number
71 A1 --- Pre_ELo Lower Level Prefix
72- 83 F12.3 cm-1 ELo ?Lower Energy Level
84- 85 A2 --- Suf_ELo *Lower Level Suffix
87 A1 --- Pre_EUp Upper Level Prefix
88- 99 F12.3 cm-1 EUp ?Upper Energy Level
100-102 A3 --- Suf_EUp *Upper Level Suffix
104-124 A21 --- Lo_conf Lower Level Configuration
126-162 A37 --- Up_conf Upper Level Configuration
164-174 A11 --- Lo_term Lower Level Term
176-186 A11 --- Up_term Upper Level Term
188-191 A4 --- Lo_J Lower Level J value
193-196 A4 --- Up_J Upper Level J value
198-205 A8 --- NIST_ref *Reference
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Note to At_sym:
Atomic symbol of atomic element
Note to Spect_No:
Stage of ionization or spectrum number. The spectrum numbers are "1"
for Roman I (neutral atom), etc.
Note to Mult_No:
The Multiplet Table Number Refers to Multiplet Tables by Charlotte
Moore (i.e., UV10).
Note to Intens:
Relative Intensity (i.e, 1500g,a). The numbers are usually visual
estimates related in some way to plate blackening. Some authors limit
these estimates to a small range (e.g., 1 to 10) while others reach
into the 100,000's. Such numbers are useful within a small wavelength
range and are meaningful only for comparing lines of a particular
spectrum taken from a particular reference. More meaningful relative
intensities obtained with photoelectric or solid-state detectors are
given by some authors, especially in the infrared region. In some
cases the originally published intensities have been adjusted in
particular regions to reduce apparent discrepancies between different
observers, etc. Kelly (1987) adjusted the various intensity scales of
the original observers to a normalized scale having a maximum
intensity of 1000. For some spectra, Kelly's adjusted intensities have
been given for some or all of the lines below 2000 A. The following
symbols further characterize the lines:
M1,M2,E2, ... : magnetic-dipole, magnetic-quadrupole, electric-
quadrupole, ... transition
bl: blended with another line that may affect the wavelength and
intensity.
m : masked by another line (no wavelength measurement)
d : diffuse, wide, hazy, etc.
g : transition involving a level of the ground term.
a : observed in absorption.
w :
? :
Note to Code:
Typesetting Code.
The braces are used for denoting multiply-classified lines or other
groupings:
{ = suppress observed value, intensity and reference
} = suppress lower and upper levels and designations
C = used when there are only calculated values, and signals
suppression of the observed line values.
Note to Obs_Wave, CalcWave:
Observed Wavelength. Wavelengths in vacuum are given for values below
2000 Angstroms, wavelengths in air for the region 2000-10,000
Angstroms. In the infrared region longer than 10,000 Angstroms vacuum
wave numbers are used (instead of wavelengths in air). Wavelengths
are in increasing order, vacuum wave numbers in decreasing order.
? : a question mark following the calculated wavelength indicates
that the energy level classification of the line is questionable
Note to Suf_ELo, Suf_EUp:
+, x, X : uncertainty
] : calculated value
? : A question mark following the upper level indicates the
classification is tentative.
Note to NIST_ref:
References for observed wavelengths (i.e, r1,s1), see the published
paper.
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There are twenty-two fields for each spectral line. Each text field is
in columnar format and is left-justified. The numeric fields (F
format) are right justified.
Modifications:
The fields for wavelength, wave and energy level from the original
data file were aligned on the dot. Excessive blanks were removed.
References:
Kelly, R.L., J. Phys. Chem. Ref. Data, Vol. 16, Suppl. No. 1 (1987).
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(End) N.P.M. Kuin [ADC/NSSDC] 09-NOV-1994