J/A+A/574/A87 MgV lines collision rates for electron excitation (Tayal+, 2015)
Collision rates for electron excitation of Mg V lines
Tayal S.S., Sossah A.M.
<Astron. Astrophys. 574, A87 (2015)>
=2015A&A...574A..87T 2015A&A...574A..87T
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes - line: formation
Abstract:
Transition probabilities and electron impact excitation collision
strengths and rates for astrophysically important lines in Mg V are
reported. The 86 fine-structure levels of the 2s22p4, 2s2p5, 2p6,
2s22p33s, 2s22p33p and 2s22p33d configurations are
included in our calculations. The effective collision strengths are
presented as a function of electron temperature for solar and other
astrophysical applications.
Description:
The collision strengths have been calculated using the
B-splineBreit-Pauli R-matrix method for all fine-structure transitions
among the 86 levels. The one-body mass, Darwin and spin-orbit
relativistic effects are included in the Breit-Pauli Hamiltonian in
the scattering calculations. The one-body and two-body relativistic
operators are included in the multiconfiguration Hartree-Fock
calculations of transition probabilities. Several sets of
non-orthogonal spectroscopic and correlation radial orbitals are used
to obtain accurate description of MgV 86 levels and to represent the
scattering functions.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 89 86 Comparison of energy levels in MgV
table2.dat 108 131 Comparison of oscillator strengths and transition
probabilities for some dipole radiative E1
transitions in MgV with other calculations
table3.dat 102 973 Transition energies, oscillator strengths, and
radiative rates for electric dipole (E1)
transitions among LSJ levels in MgV
table4.dat 118 3655 Effective collision strengths for transitions
in MgV
--------------------------------------------------------------------------------
See also:
J/ApJ/526/544 : Collision strengths in S III (Tayal+, 1999)
J/ApJS/123/295 : Electron impact excitation in Fe XI (Gupta+, 1999)
J/A+A/418/363 : Effective collision strengths for Cl II (Tayal+, 2004)
J/A+A/426/717 : Oscillator strengths for ClII lines (Tayal+, 2004)
J/ApJS/163/207 : Oscillator and collision strengths in NI (Tayal+, 2006)
J/ApJS/166/634 : OIV Effective collision strength (Tayal+, 2006)
J/A+A/486/629 : Effective collision strengths for C II (Tayal, 2008)
J/A+A/510/A79 : Effective collision strengths for K II (Tayal+, 2010)
J/ApJS/188/32 : Breit-Pauli transition probabilities for SII (Tayal+, 2010)
J/ApJ/743/206 : Effective collision strengths of FeVIII (Tayal+, 2011)
J/A+A/541/A61 : Oscillator and collision strengths for SiVIII (Tayal+, 2012)
J/A+A/548/A27 : Oscillator and collision strengths for MgVI (Tayal+, 2012)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Index Index
4- 32 A29 --- CFG-LSJ Configuration and LSJ value
35- 41 F7.5 Ry EExp ? Experimental energy
43- 49 F7.5 Ry Epa Present energy with 5179 configurations
51- 57 F7.5 Ry Epb Present energy with 427 configurations
59- 65 F7.5 Ry EpC MCHF calculations of Tachiev and Froese Fischer
from http://nlte.nist.gov/MCHF/view.html
67- 73 F7.5 Ry EpB Superstructure calculation of Bhatia et al.
(2006, At. Data Nucl. Data Tables 92, 105)
75- 81 F7.5 Ry EpH ? CIV3 calculations of Hudson et al.
(2009A&A...494..729H 2009A&A...494..729H, Cat. J/A+A/494/729)
83- 89 F7.5 Ry EpBZ ? Superstructure calculations of Butler and
Zeippen (1994A&AS..108....1B 1994A&AS..108....1B, Cat. J/A+AS/108/1)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- i Initial level
17 A1 --- --- [-]
19- 44 A26 --- f Final level
46 I1 --- gi Initial g value
48 I1 --- gf Final g value
50- 58 E9.4 --- fLP Present length oscillator strength
60- 68 E9.4 s-1 ALP Present transition probability in length form
70- 78 E9.4 --- fLC MCHF length oscillator strengths of Tachiev and
Froese Fischer from
http://nlte.nist.gov/MCHF/view.html
80- 88 E9.4 s-1 ALC MCHF length transition probabilities of
Tachiev and Froese Fischer from
http://nlte.nist.gov/MCHF/view.html
90- 98 E9.4 --- fLB Length oscillator strengths from Superstructure
calculation of Bhatia et al.
(2006, At. Data Nucl. Data Tables 92, 105)
100-108 E9.4 s-1 ALB Length transition probabilities from
Superstructure calculation of Bhatia et al.
(2006, At. Data Nucl. Data Tables 92, 105)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 26 A26 --- i Initial level
28 A1 --- --- [-]
30- 57 A28 --- f Final level
59 I1 --- gi Lower level weight
61- 62 I2 --- gf Upper level weight
64- 72 F9.3 0.1nm Wave Wavelength (ΔEif)
74- 82 E9.4 --- fL Present length oscillator strength
84- 92 E9.4 --- fV Present velocity oscillator strength
94-102 E9.4 s-1 AL Present transition probabilities in length form
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- i Intial level
3 A1 --- --- [-]
5- 6 I2 --- f Final level
8- 14 E7.3 --- ECS3.2 Effective Collision Strength at logTe=3.2K
16- 22 E7.3 --- ECS3.4 Effective Collision Strength at logTe=3.4K
24- 30 E7.3 --- ECS3.6 Effective Collision Strength at logTe=3.6K
32- 38 E7.3 --- ECS3.8 Effective Collision Strength at logTe=3.8K
40- 46 E7.3 --- ECS4.0 Effective Collision Strength at logTe=4.0K
48- 54 E7.3 --- ECS4.2 Effective Collision Strength at logTe=4.2K
56- 62 E7.3 --- ECS4.4 Effective Collision Strength at logTe=4.4K
64- 70 E7.3 --- ECS4.6 Effective Collision Strength at logTe=4.6K
72- 78 E7.3 --- ECS4.8 Effective Collision Strength at logTe=4.8K
80- 86 E7.3 --- ECS5.0 Effective Collision Strength at logTe=5.0K
88- 94 E7.3 --- ECS5.2 Effective Collision Strength at logTe=5.2K
96-102 E7.3 --- ECS5.4 Effective Collision Strength at logTe=5.4K
104-110 E7.3 --- ECS5.6 Effective Collision Strength at logTe=5.6K
112-118 E7.3 --- ECS6.0 Effective Collision Strength at logTe=6.0K
--------------------------------------------------------------------------------
Acknowledgements:
Swaraj Tayal, stayal(at)cau.edu
(End) Patricia Vannier [CDS] 20-May-2015