J/A+A/432/1151 Electron impact excitation of Al XIII (Aggarwal+, 2005)
Electron impact excitation of Al XIII : a relativistic approach.
Aggarwal K.M., Keenan F.P., Rose S.J.
<Astron. Astrophys. 432, 1151 (2005)>
=2005A&A...432.1151A 2005A&A...432.1151A
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes
Abstract:
Energy levels, radiative rates, collision strengths, and effective
collision strengths for all transitions up to and including the n=5
levels of Al XIII have been computed in the jj coupling scheme
including relativistic effects. All partial waves with angular
momentum J≤60 have been included, and resonances have been resolved
in a fine energy grid in the threshold region. Collision strengths are
tabulated at energies above thresholds in the range
170.0≤E≤300.0Ryd, and results for effective collision strengths,
obtained after integrating the collision strengths over a Maxwellian
distribution of electron velocities, are tabulated over a wide
temperature range of 4.4≤logTe≤6.8K. The importance of including
relativistic effects in a calculation is disc ussed in comparison with
the earlier available non-relativistic results.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 57 25 Comparison between NIST and our present GRASP
energy levels (in Ry) for Al XIII
table2.dat 38 90 Transition energies, oscillator strengths and
radiative rates for allowed transitions in Al XIII
table3.dat 86 300 Collision strengths for transitions in Al XIII
table4.dat 122 300 Effective collision strengths for transitions
in Al XIII
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See also:
J/A+A/420/783 : Electron impact excitation of Fe XVII (Aggarwal+, 2004)
J/A+A/399/799 : Fe XI trans. effective collision strengths (Aggarwal+, 2003)
J/A+A/407/769 : Excitation rates for transitions in Ca XV (Aggarwal+, 2003)
J/A+A/410/349 : Effective collision strengths in Fe XV (Aggarwal+, 2003)
J/ApJS/121/265 : Oscillator Strengths and Radiative Rates for FeXV (Deb+, 1999)
J/ApJS/123/311 : Excitation rate coefficients for O III (Aggarwal+, 1999)
J/A+A/418/371 : Electron impact excitation of Fe XIII (Aggarwal+, 2004)
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
4- 5 A2 --- Conf Configuration
8- 19 A12 --- Level Level
22- 31 F10.6 Ry NIST NIST energy level
35- 44 F10.6 Ry GRASP1 Present GRASP Coulomb energies
48- 57 F10.6 Ry GRASP2 Present GRASP QED corrected energies
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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 i level
4- 5 I2 --- j j level
7- 15 E9.4 0.1nm DEij Transition energy
17- 25 E9.4 --- fij Oscillator strength
27- 35 E9.4 s-1 Aji Radiative rates
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Byte-by-byte Description of file: table3.dat
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Bytes Format energy of Units Label Explanations
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1- 2 I2 --- i Transition index for initial level
4- 5 I2 --- j Transition index for final level
7- 14 E8.4 --- CS170 Collision strength at energy of 170.0Ry
16- 23 E8.4 --- CS180 Collision strength at energy of 180.0Ry
25- 32 E8.4 --- CS190 Collision strength at energy of 190.0Ry
34- 41 E8.4 --- CS200 Collision strength at energy of 200.0Ry
43- 50 E8.4 --- CS220 Collision strength at energy of 220.0Ry
52- 59 E8.4 --- CS240 Collision strength at energy of 240.0Ry
61- 68 E8.4 --- CS260 Collision strength at energy of 260.0Ry
70- 77 E8.4 --- CS280 Collision strength at energy of 280.0Ry
79- 86 E8.4 --- CS300 Collision strength at energy of 300.0Ry
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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 Transition index for initial level
4- 5 I2 --- j Transition index for final level
7- 14 E8.4 --- ECS4.4 Effective collision strength at logTe=4.4K
16- 23 E8.4 --- ECS4.6 Effective collision strength at logTe=4.6K
25- 32 E8.4 --- ECS4.8 Effective collision strength at logTe=4.8K
34- 41 E8.4 --- ECS5.0 Effective collision strength at logTe=5.0K
43- 50 E8.4 --- ECS5.2 Effective collision strength at logTe=5.2K
52- 59 E8.4 --- ECS5.4 Effective collision strength at logTe=5.4K
61- 68 E8.4 --- ECS5.6 Effective collision strength at logTe=5.6K
70- 77 E8.4 --- ECS5.8 Effective collision strength at logTe=5.8K
79- 86 E8.4 --- ECS6.0 Effective collision strength at logTe=6.0K
88- 95 E8.4 --- ECS6.2 Effective collision strength at logTe=6.2K
97-104 E8.4 --- ECS6.4 Effective collision strength at logTe=6.4K
106-113 E8.4 --- ECS6.6 Effective collision strength at logTe=6.6K
115-122 E8.4 --- ECS6.8 Effective collision strength at logTe=6.8K
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Acknowledgements: K. Aggarwal, K.Aggarwal(at)qub.ac.uk
(End) Patricia Vannier [CDS] 02-Dec-2004