J/ApJS/238/34 Energy levels for L-shell ions of sulfur & argon (Santana+, 2018)
Relativistic MR-MP energy levels for L-shell ions of sulfur and argon.
Santana J.A., Lopez-Dauphin N.A., Morales Butler E.J., Beiersdorfer P.
<Astrophys. J. Suppl. Ser., 238, 34 (2018)>
=2018ApJS..238...34S 2018ApJS..238...34S
ADC_Keywords: Atomic physics
Keywords: atomic data ; line: identification
Abstract:
Calculated level energies for valence and K-vacancy states are
provided for the ion series SVII-SXIV and ArIX-ArXVI. The calculations
were performed with the relativistic Multi-Reference Moller-Plesset
Perturbation Theory method (MR-MP). The data set includes all the
level energies with configurations 1s22(s,p)q, 1s22(s,p)q-1nl,
1s12(s,p)q+1, 1s12(s,p)qnl, 2(s,p)q+2, and 2(s,p)q+1nl,
where 1≤q≤8, n≤5, and l≤3. We have compared our results with data
from the National Institute of Standards and Technology (NIST) online
database and with previous calculations. The average deviation of
valence level energies ranges from 0.16eV in Ne-like ions to 0.01eV in
Li-like ions, showing that the present MR-MP valence level energies
are highly accurate. In the case of K-vacancy states, the deviation is
generally below 0.3eV for Li-like SXIV and ArXVI. The deviation for
K-vacancy energies in other L-shell ions (Be-, B-, C-, N-, and O-like
Ar ions) is higher but likely because the NIST-recommended values have
a higher uncertainty. The data set includes many n=4 and n=5 valence
and K-vacancy levels in L-shell ions of S and Ar that have not been
previously reported. The data can be used for line identification and
modeling of L-shell ions of S and Ar in astrophysical and
laboratory-generated plasmas, and as energy references in the absence
of more accurate laboratory measurements.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 47 15785 Level energies in L-shell ions of S evaluated
with the MR-MP method
table2.dat 47 15819 Level energies in L-shell ions of Ar evaluated
with the MR-MP method
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See also:
J/A+AS/125/149 : CHIANTI: An Atomic Database For Emission Lines I. (Dere+ 1997)
J/A+A/436/1141 : Radiative rates in Ar XIII, Ar XIV & Ar XV (Aggarwal+, 2005)
J/ApJS/156/105 : Transitions in L-shell ions of Fe and Ni (Gu+, 2005)
J/A+A/518/A64 : Na-like iso-electronic sequence. II. (Liang+, 2010)
J/A+A/533/A87 : Sulphur ions iso-electronic sequence (Liang+, 2011)
J/A+A/547/A87 : B-like iso-electronic sequence (Liang+, 2012)
J/ApJS/207/11 : Fe XVI radiative rates (Diaz+, 2013)
J/A+A/564/A24 : Carbon isoelectronic sequence data (Ekman+, 2014)
J/ApJS/215/26 : Energy levels & transition rates of C-like ions (Wang+, 2014)
J/ApJS/218/16 : Energy levels & transition rates of Be-like ions (Wang+, 2015)
J/ApJS/223/3 : Energies & radiative transition -- ArXII-ZnXXIV (Wang+, 2016)
J/ApJS/234/13 : Relativistic MR-MP energy levels for Si (Santana+, 2018)
Byte-by-byte Description of file: table[12].dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- N [3/10] Number of electrons
4- 7 I4 --- Ind [1/3900] Level index
9- 25 A17 --- Config The jj-Configuration (1)
27- 30 A4 --- J J level
32- 35 A4 --- Par Parity ("odd" or "even")
37- 47 F11.6 eV Energy [0/7232] Present MR-MP energies
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Note (1): The number after the -/+ symbols is the power of the corresponding
configuration. For examples, the jj-configuration of level 15 in
Li-like S is 1s21/24f_7/2 and in Li-like Ar is 1s21/24f_7/2.
s = s1/2;
p- = p1/2;
p+ = p3/2;
d- = d3/2;
d+ = d5/2;
f- = f5/2;
f+ = f7/2.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 03-Dec-2018