J/A+A/450/1249 Fe XVI radiative and excitation rates (Aggarwal+, 2006)
Electron impact excitation of Fe XVI: radiative and excitation rates.
Aggarwal K.M., Keenan F.P.
<Astron. Astrophys. 450, 1249 (2006)>
=2006A&A...450.1249A 2006A&A...450.1249A
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes
Abstract:
In this paper we report calculations for energy levels, radiative
rates, collision strengths, and effective collision strengths for
transitions in Fe XVI.
For energy levels and radiative rates we have used the General purpose
Relativistic Atomic Structure Package (GRASP), and for the computations
of collision strengths the Dirac Atomic R-matrix Code (DARC) has been
adopted.
Energies for the lowest 39 levels among the n≤7 (l≤4) configurations
of Fe XVI are reported. Additionally, radiative rates, oscillator
strengths, and line strengths are reported for all electric dipole
(E1), magnetic dipole (M1), electric quadrupole (E2), and magnetic
quadrupole (M2) transitions among these levels. Electron impact
excitation collision strengths have also been calculated for all 741
transitions among the above 39 levels over a wide energy range up to
220 Ryd. Resonances have been resolved in the threshold region, and
effective collision strengths have been obtained over a wide
temperature range up to 107K. Comparisons are made with the
available results in the literature, and the accuracy of the present
results is assessed.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 59 39 Energy levels (in Ryd) of Fe XVI
table2.dat 75 499 Transition energies, radiative rates, oscillator
strengths, and line strengths for electric dipole (E1)
and electric quadrupole (E2) transitions in Fe XVI
table3.dat 75 434 Transition energies, radiative rates, oscillator
strengths, and line strengths for magnetic dipole (M1)
and magnetic quadrupole (M2) transitions in Fe XVI
table4.dat 41 180 Collision strengths for transitions in Fe XVI
table5.dat 104 741 Effective collision strengths for transitions in Fe XVI
tables.tex 299 2482 LaTex version of the tables
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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/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)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Index Index number
4- 5 A2 --- Conf Configuration
7- 18 A12 --- Level Level
21- 27 F7.4 Ry Expt ?=- Theoretical threshold energy (1)
29- 35 F7.4 Ry GRASPa ?=- GRASP Coulomb energy
37- 43 F7.4 Ry GRASPb ?=- GRASP QED corrected energy
45- 51 F7.4 Ry FAC ?=- Energy from the Flexible Atomic Code of
Gu (2003ApJ...582.1241G 2003ApJ...582.1241G)
53- 59 F7.4 Ry SZF ?=- Energy from Sampson et al.
(1990, ADNDT, 44, 209)
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Note (1): NIST: http://physics.nist.gov/PhysRefData
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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 Lower level
4- 5 I2 --- j Upper level
7- 15 E9.4 0.1nm DEij Transition energy, ΔEij
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 --- fijE2 Electric quadrupole (E2) oscillator strength
67- 75 E9.4 --- SE2 Electric quadrupole (E2) line strength
(in atomic unit)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- i Lower level
4- 5 I2 --- j Upper level
7- 15 E9.4 0.1nm DEij Transition energy, ΔEij
17- 25 E9.4 s-1 AjiM1 Magnetic dipole (M1) radiative rate
27- 35 E9.4 --- fijM1 Magnetic dipole (M1) oscillator strength
37- 45 E9.4 --- SM1 Magnetic dipole (M1) line strength
(in atomic unit)
47- 55 E9.4 s-1 AjiM2 Magnetic quadrupole (M2) radiative rate
57- 65 E9.4 --- fijM2 Magnetic quadrupole (M2) oscillator strength
67- 75 E9.4 --- SM2 Magnetic quadrupole (M2) line strength
(in atomic unit)
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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 Lower level
4- 5 I2 --- j Upper level
7- 14 E8.4 --- CS50 Collision strength for E=50Ryd
16- 23 E8.4 --- CS100 Collision strength for E=100Ryd
25- 32 E8.4 --- CS150 Collision strength for E=150Ryd
34- 41 E8.4 --- CS200 Collision strength for E=200Ryd
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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 Lower level
4- 5 I2 --- j Upper level
7- 14 E8.4 --- ECS5.0 Effective collision strength for logTe=5.0K
16- 23 E8.4 --- ECS5.2 Effective collision strength for logTe=5.2K
25- 32 E8.4 --- ECS5.4 Effective collision strength for logTe=5.4K
34- 41 E8.4 --- ECS5.6 Effective collision strength for logTe=5.6K
43- 50 E8.4 --- ECS5.8 Effective collision strength for logTe=5.8K
52- 59 E8.4 --- ECS6.0 Effective collision strength for logTe=6.0K
61- 68 E8.4 --- ECS6.2 Effective collision strength for logTe=6.2K
70- 77 E8.4 --- ECS6.4 Effective collision strength for logTe=6.4K
79- 86 E8.4 --- ECS6.6 Effective collision strength for logTe=6.6K
88- 95 E8.4 --- ECS6.8 Effective collision strength for logTe=6.8K
97-104 E8.4 --- ECS7.0 Effective collision strength for logTe=7.0K
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Acknowledgements:
Kanti Aggarwal. K.Aggarwal(at)qub.ac.uk
(End) Patricia Vannier [CDS] 24-Jan-2006