J/A+A/486/1053 O IV radiative and excitation rates (Aggarwal+, 2008)
Energy levels, radiative rates, and excitation rates for transitions in O IV.
Aggarwal K.M., Keenan F.P.
<Astron. Astrophys. 486, 1053 (2008)>
=2008A&A...486.1053A 2008A&A...486.1053A
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes
Abstract:
In this paper we report calculations for energy levels, radiative
rates, and excitation rates for transitions in O IV.
The GRASP (general-purpose relativistic atomic structure package) and
FAC (flexible atomic code) we adopted for calculating energy levels
and radiative rates, and the Dirac atomic R-matrix code (DARC) used to
determine the excitation rates.
Oscillator strengths and radiative rates are reported for all E1, E2,
M1, and M2 transitions among the lowest 75 levels of O IV.
Additionally, lifetimes are reported for all levels and comparisons
made with those available in the literature. Finally, effective
collision strengths are reported for all transitions over a wide
temperature range below 106K. Comparisons are made with earlier
results and the accuracy of the data is assessed.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1a.dat 48 75 Energy levels of OIV
table1b.dat 90 75 Comparison of energy levels of OIV and their lifetimes
table1c.dat 72 25 Comparison of energy levels of OIV
table2.dat 75 45 Comparison of oscillator strengths for some
transitions of OIV
table4.dat 75 2593 Transition wavelengths, radiative rates, oscillator
strengths and line strengths for electric dipole (E1)
and Aji for E2, M1 and M2 transitions in OIV
table5.dat 86 74 Collision strengths for resonance transitions of OIV
table6.dat 113 2775 Effective collision strengths for transitions in OIV
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See also:
J/A+A/427/763 : Fe X E1, E2,M1 and M2 transitions (Aggarwal+, 2004)
J/A+A/439/1215 : Fe X effective collision strengths (Aggarwal+, 2005)
J/A+A/399/799 : Fe XI effective collision strengths (Aggarwal+, 2003)
J/A+A/418/371 : Fe XIII electron impact excitation (Aggarwal+, 2004)
J/A+A/429/1117 : Fe XIII effective collision strengths (Aggarwal+, 2005)
J/ApJS/121/265 : Fe XV oscillator Strengths and Radiative Rates (Deb+, 1999)
J/A+A/410/349 : Fe XV effective collision strengths (Aggarwal+, 2003)
J/A+A/450/1249 : Fe XVI radiative and excitation rates (Aggarwal+, 2006)
J/A+A/420/783 : Fe XVII electron impact excitation (Aggarwal+, 2004)
J/A+A/416/383 : Fe XVIII transition probabilities (Jonauskas+, 2004)
J/ApJS/123/311 : O III excitation rate coefficients (Aggarwal+, 1999)
J/A+A/407/769 : Ca XV excitation rates for transitions (Aggarwal+, 2003)
J/A+A/432/1151 : Al XIII electron impact excitation (Aggarwal+, 2005)
J/A+A/436/1141 : Ar XIII, Ar XIV + Ar XV radiative rates (Aggarwal+, 2005)
J/A+A/441/831 : Ar XVII electron impact excitation (Aggarwal+, 2005)
J/A+A/460/331 : Fe IX radiative and excitation rates (Aggarwal+, 2006)
J/A+A/463/399 : Fe XVI radiative rates (Aggarwal+, 2007)
J/A+A/484/879 : Fe XXVII radiative and excitation rates (Aggarwal+, 2008)
J/A+A/487/383 : Ar XVIII radiative and excitation rates (Aggarwal+, 2008)
Byte-by-byte Description of file: table1a.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Index [1,75] Index (in table1a)
4- 19 A16 --- Conf Configuration
21- 32 A12 --- Level Level
34- 40 F7.5 Ry GRASP0 Energy from the GRASP code without Breit and
QED effects from 75 level calculations
42- 48 F7.5 Ry GRASP1 Energy from the GRASP code with Breit and QED
effects from 75 level calculations
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Byte-by-byte Description of file: table1b.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ind.b [1,75] Index (in table1b)
4- 19 A16 --- Conf Configuration
21- 32 A12 --- Level Level
34- 40 F7.5 Ry Expt Theoretical threshold energy (G1)
42- 48 F7.5 Ry GRASP1 Energy from 75 level calculations (1)
50- 56 F7.5 Ry GRASP2 Energy from 219 level calculations (1)
58- 64 F7.5 Ry GRASP3 Energy from 326 level calculations (1)
66- 72 F7.5 Ry FAC Energy from the FAC code
with 686 level calculations
74- 80 F7.5 Ry MCHF ?=- Energy of Tayal (2006, J/ApJS/166/634)
from the MCHF code
82- 90 E9.4 s tau ?=- Lifetime
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Note (1): computed from the GRASP code
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Byte-by-byte Description of file: table1c.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Index [1,25] Index
4- 19 A16 --- Conf Configuration
21- 32 A12 --- Level Level
34- 40 F7.5 Ry Expt Theoretical threshold energy (G1)
42- 48 F7.5 Ry GRASP Energy from the GRASP code
from 219 level calculations
50- 56 F7.5 Ry MCHF1 Energy of Tachiev & Froese-Fischer
(2000, J. Phys. B33, 2319) from the MCHF code
58- 64 F7.5 Ry MCHF2 Energy of Tayal (2006, Cat. J/ApJS/166/634)
from the MCHF code
66- 72 F7.5 Ry CIV3 ? Energy of Correge & Hibbert
(2004, ADNDT, 86, 19) from the CIV3 code
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- i [1,18] Lower level
4- 5 I2 --- j [6,20] Upper level
7- 14 E8.4 Ry GRASP1 Energy from the GRASP code
from 75 level calculations
16- 23 E8.4 Ry GRASP2 Energy from the GRASP code
from 219 level calculations
25- 32 E8.4 Ry GRASP3 Energy from the GRASP code
from 326 level calculations
34- 41 E8.4 Ry FAC Energy from the FAC code
with 686 level calculations
43- 50 E8.4 Ry MCHF1 ? Energy of Tachiev & Froese-Fischer
(2000, J. Phys. B33, 2319) from the MCHF code
52- 59 E8.4 Ry MCHF2 ? Energy of Tayal (2006, J/ApJS/166/634)
from the MCHF code
60- 67 E8.4 Ry CIV3 Energy of Correge & Hibbert
(2004, ADNDT, 86, 19) from the CIV3 code
69- 75 E7.3 Ry Expt ? Theoretical threshold energy (G1)
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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- 2 I2 --- i [1,74] Lower level
4- 5 I2 --- j [2,75] Upper level
7- 15 E9.4 0.1nm lambdaij Transition wavelength
17- 25 E9.4 s-1 AjiE1 Electric dipole (E1) radiative rate
27- 35 E9.4 --- fijE1 Electric dipole (E1) oscillator strength
37- 45 E9.4 --- SE1 Electric dipole (E1) line strength
(in atomic unit)
47- 55 E9.4 s-1 AjiE2 Electric quadrupole (E2) radiative rate
57- 65 E9.4 s-1 AijM1 Magnetic dipole (M1) radiative rate
67- 75 E9.4 s-1 AijM2 Magnetic quadrupole (M2) radiative rate
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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 --- i [1] i lower level index of the transition
4- 5 I2 --- j [2,75] j upper level index of the transition
7- 14 E8.4 --- CS6.0 Collision strength at 6.0Ry
16- 23 E8.4 --- CS7.0 Collision strength at 7.0Ry
25- 32 E8.4 --- CS8.0 Collision strength at 8.0Ry
34- 41 E8.4 --- CS9.0 Collision strength at 9.0Ry
43- 50 E8.4 --- CS10.0 Collision strength at 10.0Ry
52- 59 E8.4 --- CS15.0 Collision strength at 15.0Ry
61- 68 E8.4 --- CS20.0 Collision strength at 20.0Ry
70- 77 E8.4 --- CS25.0 Collision strength at 25.0Ry
79- 86 E8.4 --- CS25.9 Collision strength at 25.9Ry (1)
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Note (1): Results are from the FAC code at an excited energy (Ej) of 25.9Ryd
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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- 2 I2 --- i [1,74] i lower level index of the transition
4- 5 I2 --- j [2,75] j upper level index of the transition
7- 14 E8.4 --- ECS3E+3 Effective collision strength at Te= 3000K
16- 23 E8.4 --- ECS5E+3 Effective collision strength at Te= 5000K
25- 32 E8.4 --- ECS7E+3 Effective collision strength at Te= 7000K
34- 41 E8.4 --- ECS1E+4 Effective collision strength at Te= 10000K
43- 50 E8.4 --- ECS3E+4 Effective collision strength at Te= 30000K
52- 59 E8.4 --- ECS5E+4 Effective collision strength at Te= 50000K
61- 68 E8.4 --- ECS7E+4 Effective collision strength at Te= 70000K
70- 77 E8.4 --- ECS1E+5 Effective collision strength at Te= 100000K
79- 86 E8.4 --- ECS3E+5 Effective collision strength at Te= 300000K
88- 95 E8.4 --- ECS5E+5 Effective collision strength at Te= 500000K
97-104 E8.4 --- ECS7E+5 Effective collision strength at Te= 700000K
106-113 E8.4 --- ECS1E+6 Effective collision strength at Te=1000000K
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Global notes:
Note (G1): See NIST, http://physics.nist.gov/PhysRefData
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Acknowledgements:
Kanti Aggarwal, K.Aggarwal(at)qub.ac.uk
(End) Patricia Vannier [CDS] 28-May-2008