J/A+A/587/A107 Transitions between Ni II bound states (Cassidy+, 2016)
Rates of E1, E2, M1, and M2 transitions in Ni II.
Cassidy C.M., Hibbert A., Ramsbottom C.A.
<Astron. Astrophys. 587, A107 (2016)>
=2016A&A...587A.107C 2016A&A...587A.107C (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes
Abstract:
We present rates for all E1, E2, M1, and M2 transitions among the 295
fine-structure levels of the configurations 3d9, 3d84s,
3d74s2, 3d84p, and 3d74s4p, determined through an extensive
configuration interaction calculation.
The CIV3 code developed by Hibbert and coworkers is used to determine
for these levels configuration interaction wave functions with
relativistic effects introduced through the Breit-Pauli approximation.
Description:
In the present calculation, we evaluate oscillator strengths and
transition rates for all 5023 E1 optically allowed and
intercombination transitions among the 295 fine-structure levels
associated with the 3d9, 3d84s, 3d74s2, 3d84p, and 3d74s4p
configurations, in both the length (fl, Al) and velocity (fv, Av)
gauges.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 97 5023 E1 transitions in NiII
table5.dat 86 295 Identifiers, lifetimes and percentage
compositions of the 295 levels
table6.dat 39 5023 E1 transition data
table7.dat 49 6923 A-values of both E1 and M2 transitions, and
their sum, for all possible transitions
table8.dat 49 24554 A-values of both E2 and M1 transitions, and
their sum, for all possible transitions
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 23 A23 --- Lo Spectroscopic designation of lower level
25- 47 A23 --- Up Spectroscopic designation of upper level
49- 59 F11.2 0.1nm lambda Wavelength of the transition, given in vacuum
61- 65 F5.3 --- fl Oscillator strength of the transition,
in length form
67- 69 I3 --- n_fl
71- 75 F5.3 --- fv Oscillator strength of the transition,
in velocity form
77- 79 I3 --- n_fv
81- 85 F5.3 s-1 Al A-value (transition rate) of the transition,
in length form
87- 88 I2 --- n_Al
90- 94 F5.3 s-1 Av A-value (transition rate) of the transition,
in velocity form
96- 97 I2 --- n_Av
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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- 3 I3 --- Level [1/295] Index number of each level
5- 27 A23 --- Conf Spectroscopic designation of the level (1)
29- 38 E10.5 ns Lifetime ?=- Lifetime of each level
40- 45 I6 cm-1 E Energy of each level used in the calculation
of the eigenvectors and transition energies (2)
47- 48 I2 --- Per ? Percentage composition (square of the CI
coefficient) of the configuration
50- 51 I2 --- PerC ? Percentage composition of other main mixings (3)
52 A1 --- ---
53- 55 I3 --- PerCL ? Level number for the mixing (3)
56 A1 --- ---
57- 70 A14 --- n_PerCL Note on PerCompLeveL
72- 73 I2 --- PerC2 ? Percentage composition of other main mixings (3)
74 A1 --- ---
75- 77 I3 --- PerCL2 ? Level number for the mixing (3)
78 A1 --- ---
80- 81 I2 --- PerC3 ? Percentage composition of other main mixings (3)
82 A1 --- ---
83- 85 I3 --- PerCL3 ? Level number for the mixing (3)
86 A1 --- ---
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Note (1): This is mostly the configuration with the largest CI coefficient,
although in a few cases the same configuration would be dominant in more
than one level.
Note (2): Where possible, NIST values have been used.
Note (3): for example, 28[9] in level 8 implies 28% of the configuration of
level 9.
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Lo Index number of the lower level
5- 7 I3 --- Up Index number of the upper level
9- 19 F11.2 0.1nm lambda Wavelength of the transition, given in vacuum
21- 29 E9.4 --- gf gf-value of the transition, where g=(2J+1) of
the lower level, and f is the oscillator
strength in length form
31- 39 E9.4 --- gA gA-value of the transition, where g=(2J+1) of
the upper level, and A is the transition rate
in length form
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Lo Index number of the lower level
5- 7 I3 --- Up Index number of the upper level
9- 19 F11.2 0.1nm lambda Wavelength of the transition, given in vacuum
21- 29 E9.4 s-1 A(E1) A-value (length form) of the E1 transition
31- 39 E9.4 s-1 A(M2) A-value (length form) of the M2 transition
41- 49 E9.4 s-1 A(E1+M2) Sum of A-values of E1 and M2 transitions
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Lo Index number of the lower level
5- 7 I3 --- Up Index number of the upper level
9- 19 F11.2 0.1nm lambda Wavelength of the transition, given in vacuum
21- 29 E9.4 s-1 A(E2) A-value (length form) of the E2 transition
31- 39 E9.4 s-1 A(M1) A-value (length form) of the M1 transition
41- 49 E9.4 s-1 A(E2+M1) Sum of A-values of E2 and M1 transitions
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Acknowledgements:
Alan Hibbert, a.hibbert(at)qub.ac.uk
(End) Alan Hibbert [Queen's Univ., Belfast], Patricia Vannier [CDS] 11-Jan-2016