J/A+A/645/A136 Spectral properties for Fluorine-like Ions (Liu+, 2021)
Spectral properties and polarizabilities for Fluorine-like Ions with Z =20-30.
Liu S., Cheng Y., Zhang S.B.
<Astron. Astrophys. 645, A136 (2021)>
=2021A&A...645A.136L 2021A&A...645A.136L (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes - methods: numerical -
relativistic processes
Abstract:
The primary motivation of this paper is to provide accurate atomic
properties of F-like ions with Z=20-30, including energy levels,
line strengths, static dipole polarizabilities, and lifetimes. In
addition, a detailed analysis is also carried out to explore the
convergence and uncertainties of our results.
Large-scale B-spline relativistic configuration interaction
calculations are carried out to generate the atomic properties of
F-like ions. The radial parts of one-electron Dirac orbitals are
obtained from the relativistic self-consistent field procedure in
which the Breit Interaction and QED corrections (vacuum polarization
and self-energy terms) are also included. A numerical method, called
Emu CI, is adopted to decrease the size of CI matrix significantly
without loss of much accuracy.
Energy levels and line strengths for electric-dipole (E1),
electric-quadrupole (E2), and magnetic-dipole (M1) transitions are
provided for the 250 lowest levels of each system, showing a good
agreement with available theoretical and experimental information. The
static dipole polarizabilities and lifetimes for the ten lowest states
are also reported. A statement for the convergence and uncertainties
of our results is presented.
Description:
A large scale B-spline relativistic configuration interaction
calculations are carried out to generate the atomic properties of
F-like ions with Z=20-30. Energy levels and line strengths for
electric-dipole (E1), electric-quadrupole (E2), and magnetic-dipole
(M1) transitions are provided. The lowest 35 states of J = 0.5; 1.5;
2.5; 3.5; 4.5 in both even and odd parities are calculated for each
ions, and all electric-dipole (E1), electric-quadrupole (E2), and
magnetic-dipole (M2) transitions involving the lowest 10 levels for
each ions are presented.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 112 250 Energy levels (in cm-1) relative to the ground
state for the lowest 250 levels of Fe XVIII
tableb1.dat 80 3849 Energy levels relative to the ground state for
F-like ions with Z=20-30
tableb2.dat 159 3850 Line strengths (in a.u.) for electric-dipole
transitions of F-like ions with Z=20-30
tableb3.dat 159 3850 Line strengths (in a.u.) for electric-quadrupole
transitions of F-like ions with Z=20-30
tableb4.dat 159 3850 Line strengths (in a.u.) for magnetic-dipole
transitions of F-like ions with Z=20-30
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Index Level's Index
10- 27 A18 --- Config Leading configuration
33- 41 A9 --- Term The term and total angular momenta of level
47- 53 I7 cm-1 EemuCI Energy from our emuCI calculations
56- 59 I4 cm-1 dEfCI Energy from our fullCI calculations subtract
emuCI energy
65- 70 I6 cm-1 dENIST ? Energy from our fullCI calculations subtract
energy from NIST
77- 81 I5 cm-1 dEZanna ? Energy from our fullCI calculations subtract
energy Zanna
88- 93 I6 cm-1 dEJon Energy from our fullCI calculations subtract
energy from Jonauskas
98-103 I6 cm-1 dENahar Energy from our fullCI calculations subtract
energy from Nahar
108-112 I5 cm-1 dESi ? Energy from our fullCI calculations subtract
energy from Si
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Byte-by-byte Description of file: tableb1.dat
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Bytes Format Units Label Explanations
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3- 4 I2 --- Z Atomic number
8- 10 I3 --- Index Level's Index
15- 28 A14 --- Config Leading configuration
33- 41 A9 --- Term The term and total angular momenta of level
49- 58 F10.6 --- E(ht) Absolute Energy of the levelm in Hartree unit
62- 71 F10.6 Ry deltaE(Ry) Transition Energy relative to the ground state
76- 80 F5.3 --- g g-factor
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Byte-by-byte Description of file: tableb2.dat tableb3.dat tableb4.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Z Atomic number
7- 9 I3 --- Index Upper level's Index of transition (1)
16- 24 E9.3 --- LS1 ?=- Line strengths (in au) for electric-dipole
transitions which lower level's Index is 1 (1)
31- 39 E9.3 --- LS2 ?=- Line strengths (in au) for electric-dipole
transitions which lower level's Index is 2 (1)
46- 54 E9.3 --- LS3 ?=- Line strengths (in au) for electric-dipole
transitions which lower level's Index is 3 (1)
61- 69 E9.3 --- LS4 ?=- Line strengths (in au) for electric-dipole
transitions which lower level's Index is 4 (1)
76- 84 E9.3 --- LS5 ?=- Line strengths (in au) for electric-dipole
transitions which lower level's Index is 5 (1)
91- 99 E9.3 --- LS6 ?=- Line strengths (in au) for electric-dipole
transitions which lower level's Index is 6 (1)
106-114 E9.3 --- LS7 ?=- Line strengths (in au) for electric-dipole
transitions which lower level's Index is 7 (1)
121-129 E9.3 --- LS8 ?=- Line strengths (in au) for electric-dipole
transitions which lower level's Index is 8 (1)
136-144 E9.3 --- LS9 ?=- Line strengths (in au) for electric-dipole
transitions which lower level's Index is 9 (1)
151-159 E9.3 --- LS10 ?=- Line strengths (in au) for electric-dipole
transitions which lower level's Index is 10 (1)
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Note (1): The indices for the lower (i) and upper (j) levels of a transition
refer to the ordering in tableb1.
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Acknowledgements:
Yongjun Cheng, yjcphysics(at)163.com
(End) Shi Liu [SNNU], Patricia Vannier [CDS] 24-Nov-2020