J/ApJS/227/16 Energy levels & transition rates for F-like ions (Si+, 2016) ================================================================================ Extended calculations with spectroscopic accuracy: energy levels and transition properties for the fluorine-like isoelectronic sequence with z=24-30. Si R., Li S., Guo X.L., Chen Z.B., Brage T., Jonsson P., Wang K., Yan J., Chen C.Y., Zou Y.M. =2016ApJS..227...16S (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Atomic physics Keywords: atomic data; atomic processes Abstract: We have performed extensive multiconfiguration Dirac-Hartree-Fock calculations and second-order many-body perturbation calculations for F-like ions with Z=24-30. Energy levels and transition rates for electric dipole (E1), electric-quadrupole (E2), electric-octupole (E3), magnetic dipole (M1), and magnetic-quadrupole (M2) transitions, as well as radiative lifetimes, are provided for the lowest 200 levels belonging to the 1s^2^2s^2^2p^5^, 1s^2^2s2p^6^, 1s^2^2s^2^2p^4^3l, 1s^2^2s2p^5^3l, 1s^2^2p^6^3l, and 1s^2^2s^2^2p^4^4l configurations of each ion. The results from the two sets of calculations are in excellent agreement. Extensive comparisons are also made with other theoretical results and observed data from the CHIANTI and NIST databases. The present energies and wavelengths are believed to be accurate enough to aid line identifications involving the n=3 and n=4 configurations, for which observations are largely missing. The calculated wavelengths and transition data will be useful in the modeling and diagnostics of astrophysical and fusion plasmas. Description: For the multiconfiguration Dirac-Hartree-Fock (MCDHF) calculation we use the latest version of the GRASP2K code (Jonsson+ 2013CoPhC.184.2197J), while the many-body perturbation theory (MBPT) calculation is performed using the Flexible Atomic Code (FAC; Gu 2008CaJPh..86..675G). File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 127 1400 Energy levels relative to the ground state and lifetimes for the lowest 200 levels of F-like ions with Z=24-30 table5.dat 107 6620 Wavelengths, transition rates, oscillator strengths, and line strengths for transitions among the lowest 200 levels in F-like ions with Z=24-30 -------------------------------------------------------------------------------- See also: J/A+A/592/A141 : Helium-like ions with Z=10-36 transition rates (Si+, 2016) J/ApJS/223/3 : Radiative transition from ArXII to ZnXXIV (Wang+, 2016) J/ApJS/218/16 : Energy levels + transition rates of Be-like ions (Wang+, 2015) J/ApJS/215/26 : Energy levels & transition rates of C-like ions (Wang+, 2014) J/A+A/459/307 : Fe XVIII Benchmarking atomic data (Del Zanna+, 2006) J/A+A/457/721 : IRON Project. LXII. Fe XVIII transitions (Nahar, 2006) J/ApJS/156/105 : Transitions in L-shell ions of Fe and Ni (Gu+, 2005) J/A+A/416/383 : Transition probabilities for Fe XVIII (Jonauskas+, 2004) J/A+AS/125/149 : CHIANTI: An Atomic Database For Emission Lines I. (Dere+ 1997) Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 --- Z [24/30] Atomic number 6- 8 I3 --- Key [1/200] Key number 11- 30 A20 --- Config Configuration 33- 42 A10 --- LSJ LS_J_ Term 45- 52 I8 cm-1 E-NIST [0/12941000]? Energy levels, NIST (1) 55- 62 I8 cm-1 E-MCDHF [70920/12989869]?=0 Energy levels, multiconfiguration Dirac-Hartree-Fock (MCDHF) calculation 65- 72 I8 cm-1 E-MBPT [70988/12987289]?=0 Energy levels, many-body perturbation theory (MBPT) calculation 75- 82 E8.2 s LT-MCDHF [0/0.00016]? Lifetimes, MCDHF calculation 85- 92 E8.2 s LT-MBPT [0/0.00016]? Lifetimes, MBPT calculation 97-127 A31 --- Comp LSJ compositions -------------------------------------------------------------------------------- Note (1): From the NIST atomic spectra database (Kramida+ 2016APS..DMP.Q1202K). The NIST identification of 2s^2^2p^4^(^1^S)4d ^2^D_1/2_ for ZnXXII is a misprint (Sugar & Musgrove 1995JPCRD..24.1803S), and is replaced by 2s^2^2p^4^(^1^S)4d ^2^D_3/2_. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table5.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 --- Z [24/30] Atomic number 6- 8 I3 --- j [2/200] Upper level 11- 13 I3 --- i [1/184] Lower level 16- 17 A2 --- Type Transition type: electric dipole (E1), electric-quadrupole (E2) or magnetic dipole (M1) 20- 29 E10.4 0.1nm lam-MCDHF [7.7/1410] Wavelengths, MCDHF calculation, in Angstroms 32- 41 E10.4 0.1nm lam-MBPT [7.7/1409] Wavelengths, MBPT calculation, in Angstroms 44- 52 E9.3 s-1 A-MCDHF [6395/4.5e+13] Transition rates, MCDHF calculation 55- 63 E9.3 --- gf-MCDHF [3.8e-6/8] Oscillator strengths, MCDHF calculation 66- 74 E9.3 --- S-MCDHF [3.3e-7/1.7] Line strengths (in au), MCDHF calculation 77- 85 E9.3 s-1 A-MBPT [6370/4.4e+13] Transition rates, MBPT calculation 88- 96 E9.3 --- gf-MBPT [3.7e-6/7.9] Oscillator strengths, MBPT calculation 99-107 E9.3 --- S-MBPT [1.6e-7/1.7] Line strengths (in au), MBPT calculation -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Prepared by [AAS], Emmanuelle Perret [CDS] 09-Jan-2017