J/ApJS/235/27 Energy levels & transition rates for P-like ions (Wang+, 2018)
Energy levels, lifetimes, and transition rates for P-like ions from Cr X to
Zn XVI from large-scale relativistic multiconfiguration calculations.
Wang K., Jonsson P., Gaigalas G., Radziute L., Rynkun P., Del Zanna G.,
Chen C.Y.
<Astrophys. J. Suppl. Ser., 235, 27 (2018)>
=2018ApJS..235...27W 2018ApJS..235...27W
ADC_Keywords: Atomic physics
Keywords: atomic data ; atomic processes
Abstract:
The fully relativistic multiconfiguration Dirac-Hartree-Fock method is
used to compute excitation energies and lifetimes for the 143 lowest
states of the 3s23p3, 3s3p4, 3s23p23d, 3s3p33d, 3p5,
3s23p3d2 configurations in P-like ions from Cr X to Zn XVI.
Multipole (E1, M1, E2, M2) transition rates, line strengths,
oscillator strengths, and branching fractions among these states are
also given. Valence-valence and core-valence electron correlation
effects are systematically accounted for using large basis function
expansions. Computed excitation energies are compared with the NIST
ASD and CHIANTI compiled values and previous calculations. The mean
average absolute difference, removing obvious outliers, between
computed and observed energies for the 41 lowest identified levels in
Fe XII, is only 0.057%, implying that the computed energies are
accurate enough to aid identification of new emission lines from the
Sun and other astrophysical sources. The amount of energy and
transition data of high accuracy are significantly increased for
several P-like ions of astrophysics interest, where experimental data
are still very scarce.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 239 1001 Energy levels relative to the ground state along
with radiative lifetime for the 143 lowest states
of CrX, MnXI, FeXII, CoXIII, NiXIV, CuXV, ZnXVI
table5.dat 74 15563 Transition wavelengths, transition rates,
weighted oscillator strengths
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See also:
J/A+AS/125/149 : CHIANTI: An Atomic Database For Emission Lines I. (Dere+ 1997)
J/A+A/433/731 : Fe XII Benchmarking atomic data (Del Zanna+, 2005)
J/A+A/433/717 : IRON Project. LVIII. (Storey+, 2005)
J/A+A/543/A139 : Fe XII soft X-ray lines (Del Zanna+, 2012)
J/A+A/559/A100 : Boron isoelectronic sequence data (Jonsson+, 2013)
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/227/16 : Energy levels & transition rates for F-like ions (Si+, 2016)
J/ApJS/226/14 : MBPT calc. for Ne-like ions (CrXV to KrXXVII) (Wang+, 2016)
J/ApJS/223/3 : Energies & radiative transition (ArXII - ZnXXIV) (Wang+, 2016)
J/ApJS/229/37 : Energy levels & transition rates of O-like ions (Wang+, 2017)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Z [24/30] Atomic number
4- 6 I3 --- Key [1/143] Key of the level
9- 68 A60 --- Level Level
70- 76 I7 cm-1 ECI1 [0/1285246] Present ab initio calculations
78- 84 I7 cm-1 ECI2 [0/1284966] Present calculations (1)
86- 92 I7 cm-1 ENIST [0/780896]? Observed energies listed in
NIST database
94-100 I7 cm-1 EMRMP [0/826325]? The MR-MP calculations
102-110 E9.3 s taul [5.5e-12/1.8]? Lifetimes in length gauge (2)
112-120 E9.3 s tauv [5.5e-12/0.05]? Lifetimes in velocity gauge (2)
122-239 A118 --- LS-comp Present LS wavefunction compositions
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Note (1): Where energies of excited states have been shifted by a
constant ES given in Table II.
Note (2): From present calculations.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Z [24/30] Atomic number
4- 6 I3 --- j [1/41] Key of lower level
8- 10 I3 --- i [2/143] Key of upper level
12- 13 A2 --- TP Transition type (E1, E2, M1 or M2)
15- 24 E10.4 0.1nm lambda [83.1/59888] Wavelengths
26- 34 E9.3 s-1 A [0.0009/1.4e+11] Transition rates in length form
36- 44 E9.3 --- gf [1e-11/5.1] Weighted oscillator strengths
in length form
46- 54 E9.3 --- S [5e-08/34.4] Line strengths in length form;
in atomic units
56- 64 E9.3 --- BF [1e-05/1] Branching fraction from the upper level
66- 74 E9.3 --- dT [2e-06/0.9]? Relative difference of the
transition rates (1)
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Note (1): In length and velocity form as given by Eq. 3:
dT=|Al-Av|/max(Al,Av)
of the transition rates Al and Av computed in length and velocity
form as an indicator of the accuracy of the rate.
It should be emphasized that the values of dT do not represent an
uncertainty estimate of the rate for each individual transition.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 23-Aug-2018