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I. Fe-peak CoIV (Cr-like) : Z=24 : 3p6(2De)
Exploring the importance of including CI wave functions in the target –state expansion and in the (N+1)-electron quadratically integrable
function expansion
Exploring the importance of including relativistic effects in the target representation and low-energy electron collision calculation
I. Fe-peak CoIV (Cr-like) : c) 9-state LS-coupled R-matrix calculation,Calculation C, shows the effect on the collision
strengths of including additional 48 levels with electronic configuration 3p53d7. In this calculation
the target states were represented by 3d6, 3d54s, 3d54p, 3p43d8, 3p43d74s and 3p43d74p , 3p53d7,
3d44s2 and 3d44s4p, and correspondingly the (N+1)-electron configurations 3p63d7, 3p63d64s,
3p63d64p, 3p63d64s2, 3p63d54s4p, 3p63d54p2, 3p53d8, 3p43d9, 3p43d84p, 3p43d74s4p, 3p53d74p,
3p43d74p2, 3p53d64s2, 3p53d64s4p and 3p53d64p2
Detailed quantitative description of the level population kinetics in plasmas
Acknowledgments. These works have been partly supported by the Institute of Atomic Physics under Euratom-
RO and FAIR-RO research programs.
A. Ch. F.Fisher ( 2006)
I. Reference configurations: 1s22s22p6 (3s2 , 3s3p): single and double excitation from the valence electrons to account for the
valence correlation effect
II. Reference configurations 2s22p6{3s2,3p2,3d2} and 2s22p6{3s3p,3p3d} allowing one 2p electron and one valence electron
excitation
III. Similar but allows one 2s electron to be excited
II + III account for 2p and 2s core-valence correlation effect
----------------------------------------------------------------------
B. Present
1s22s22p6 (3snl, 3pnl, 3dnl) 1 n 7, 0 l 4 567 fine-structure levels
1s22s22p53s2 nl ,
1s22s22p53s3p nl , 1 n’ 5, 0 l 4 2580 fine-structure levels
1s22s22p53p2 nl
National Institute for Laser, Plasma and Radiation Physics, Magurele - Ilfov, Romania
V. Stancalie, C. Iorga and V. Pais
Studies on the Electron-Correlation and Relativistic Effects in Target Representation and Low-Energy Collision Calculation
The accuracy of a series of models for the target terms has been investigated including all of the 136 LS-coupled states, arising from the
three manifolds 3d6, 3d54s, 3d54p in the R-matrix expansion.
a) 3-state LS –coupled R-matrix calculation, Calculation A. First, we have included in the R-matrix expansion all 136 LS coupled states
which arise from the three target configurations 3d6, 3d54s and 3d54p.
b) 6 –state LS –coupled R-matrix calculation, Calculation B, retains also 136 LS terms arising from the three configurations above
augmented with 3p43d8, 3p43d74s and 3p43d74p in the target state expansion and the configurations 3p53d8, 3p43d9, 3p53d8,
3p43d9,3p43d84s and 3p63d54s2 in the (N+1)-electron quadratically integrable function expansion.
c) New target states to represent the 136 Co IV energies from the 3d5, 3d44s, 3d44p levels by allowing double electron promotions from
the 3p-shell into the 3d-shell and single electron promotion into the 4s, 4p and 4d –shell: 272 LS terms of the four configurations 3d6,
3d54s, 3d54p and 3d54d are included in the R-matrix expansion.
e- + Co3+(3p63d6 5D) Co2+*(3p53d8, 3p53d74s or 3p53d74p)
Co3+(3p63d6, 3p63d54s or 3p63d54p) + e-
Single
Excitation from
3d
Double
Excitation
from 3d
Single
Excitation from
3p
Double
Excitation from
3p
3d54s
3d54p
3d54d
3d44s2
3d44s4p
-
3p53d7
3p53d64s
3p53d64p
3p43d8
3p43d74s
3p43d74p
Exploring the effect of electron correlation in the target representation and collision calculation
II. Mg-like S4+: 2p63s2 (1S0)
Phys. Scr. 83 (2011)025301
ADNDT: http://dx.doi.org/10.1016/j.adt.2016.06.002
valence-valence valence-valence +
valence-2p core
correlation
0.43% 0.28%
A 3.7% 3.1%
I 4.1% 3.4%
Eur. Phys. J. D 66(2012) 84
uSul
ulEobsul ANN
NIR
4/
I. Fe-peak Cr-like Co IV ADNDT107(2016)140-220
FAC1: 1334 levels among the 3d6, 3d54l, 3p53d7, 3p43d8, 3p33d9, and 3p23d10 levels
FAC2: 21.992 levels of the 3d6, 3d54l, 3d55l, 3p63d44l4l’,3p53d7 and 3p43d74l configurations
FAC3: FAC2+37 198 levels of the 3p43d8, 3p33d9,3p23d10, 3p63d45l5l’ and 3p43d75l configurations
FAC4: FAC3 +12 338 levels of the 3p53d64l and 3p53d65l configurations
FAC5: FAC4 + 4610 levels of the 3p33d84l , 3p23d94l, and 3p3d104l configurations.
76 138 levels included in CI: Discrepancies with NIST up to 35% for the majority of levels
GRASP: 21 configurations 3d6, 3d54l, 3d55l, 3d44l2, 3d44l4l’ and 3p53d7 : 14 732 levels
14.732 levels included in CI: Significant discrepancies with NIST up to 26% for some levels
QRHF : radial orbitals (RO) are calculated quasi-relativistic Hartree -Fock and are supplemented with the
transformed radial orbitals (TRO) for 5 n 8 and all possible l (Bogdanovich et al. CPC 2002,2005).
1 563 846 levels included in CI with the QRHF code:Discrepances with NIST less than 3% for some levels
II. S-like Ar 2+
BPRM: CI limited to single and double excitations within n=3 complex; GRASP: J: 0±, 1±, 2±,3-,4-,5-. 24 terms
arising from the configurations: 3s23p4, 3s3p5, 3s23p33d and 3p6 for both BPRM and MCDF calculations
e-+ Ar2+(3s23p2 3P) Ar2+*(3s23p5, 3s23p43d, 3s3p6, 3s3p53d, 3s23p33d2, or 3s3p43d2)
Ar2+(3s23p4, 3s3p5, 3s23p33d, or 3s3p43d)
III. Mg-like S4+ AIP Conf. Proc, APiP Conf. Aprile 2016, Paris
Collision calculation has been performed keeping constant the target states number in the R-matrix expansion
(the lowest 17 target states) for the ICFT and MCDF/DARC approaches
ICFT ICFT ICFT
DARC DARC DARC
Rates comparison:
FAC-DW
UCL-DW
Coll. Strengths comparison:
FAC-DW : UCL-DW
Can. J. Phys. 93 (2015) 1413-19
XUV emission from the autoionizing levels in Al XI observed at the interaction of high intensity, short
pulse laser with Al target at nhelix test-bed facility at GSI;
Modeling of radiative decay rates for the high order intercombination transitions
1s2l2l’autoionizing levels 1s2l3l’ autoionizing levels Two electron transitions
Intercombination transitions
High order intercombination
transitions
High order two-electron transitions