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J/A+A/506/1501      CrVIII radiative and excitation rates     (Aggarwal+, 2009)

Radiative rates and electron impact excitation rates for transitions in Cr VIII. Aggarwal K.M., Kato T., Keenan F.P., Murakami I. <Astron. Astrophys. 506, 1501 (2009)> =2009A&A...506.1501A
ADC_Keywords: Atomic physics Keywords: atomic data - atomic processes Abstract: In this paper we report on calculations of energy levels, radiative rates, oscillator strengths, line strengths, and effective collision strengths for transitions among the lowest 362 levels of the (1s22s22p6) 3s23p5, 3s3p6, 3s23p43d, 3s3p53d, 3s23p33d2, 3s3p43d2, 3p63d, and 3s23p44l configurations of Cr VIII. Description: The General purpose relativistic atomic structure package (GRASP) and flexible atomic code (FAC) have been adopted for the calculations. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 104 362 Energy levels (in Ryd) of CrVIII and their lifetimes table3.dat 77 45210 Transition wavelengths, radiative rates, oscillator strengths and line strengths for electric dipole (E1), and Aji for E2, M1, and M2 transitions of CrVIII table4.dat 61 36 Comparison of oscillator strengths for transitions among the lowest 31 levels of CrVIII table5.dat 74 30 Comparison of lifetimes (tau) for levels of CrVIII table6.dat 97 64020 Effective collision strengths from the FAC code for transitions in CrVIII
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 XXVI radiative and excitation rates (Aggarwal+, 2008) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Index Index 5- 32 A28 --- Conf Configuration 34- 46 A13 --- Level Level 48- 54 F7.5 Ry ENIST ? NIST energy level (1) 56- 62 F7.5 Ry EGRASP1 Coulomb energies from the GRASP code 64- 70 F7.5 Ry EGRASP2 QED corrected energies the GRASP code 72- 78 F7.5 Ry EFAC Energies from the FAC Code 80- 86 F7.5 Ry ECIV3 ? Energies of Mohan et al. (2005, J. Phys., 65, 75) from the CIV3 code 88- 94 F7.5 Ry EMCHF ? Energies of Froese Fischer et al. (2006, At. Data Nucl. Data Tables, 92, 607) from the MCHF code 96-104 E9.4 s tau ? GRASP lifetime
Note (1): NIST: http://physics.nist.gov/PhysRefData
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 3 I3 --- i [1,360] Lower level 5- 7 I3 --- j [2,362] Upper level 9- 17 E9.4 0.1nm lambdaij Transition wavelength 19- 27 E9.4 s-1 AjiE1 Radiative rate for electric dipole (E1) 29- 37 E9.4 --- fijE1 Oscillator strength for electric dipole (E1) 39- 47 E9.4 --- SE1 Line strengths for electric dipole (E1) (in atomic units) 49- 57 E9.4 s-1 AjiE2 Radiative rate for E2 transition 59- 67 E9.4 s-1 AjiM1 Radiative rate for M1 transition 69- 77 E9.4 s-1 AjiM2 Radiative rate for M2 transition
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 2 I2 --- i [1,2] Lower level 4- 5 I2 --- j [2,31] Upper level 7- 15 E9.5 --- GRASP GRASP oscillator strength value (1) 17- 24 E8.5 --- FAC FAC oscillator strength value (2) 26- 33 E8.4 --- MCDF MCDF oscillator strength value (3) 35- 42 E8.4 --- HFR ? HFR oscillator strength value (4) 44- 51 E8.4 --- MCHF MCFH oscillator strength value (5) 53- 61 E9.5 --- CIV3 CIV3 oscillator strength value (6)
Note (1): Present calculations from the GRASP code with 4031 levels. Note (2): Present calculations from the FAC code with 4881 levels. Note (3): Calculations of Huang et al. (1983, At. Data Nucl. Data Tables, 28, 355) from the MCDF code. Note (4): Calculations of Fawcett (1987, At. Data Nucl. Data Tables, 36, 151) from the HFR code. Note (5): Calculations of Froese Fischer et al. (2006, At. Data Nucl. Data Tables, 92, 607) from the MCHF code. Note (6): Calculations of Mohan et al. (2005, J. Phys., 65, 75) from the CIV3 code.
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Index Index 4- 21 A18 --- Conf Configuration 23- 34 A12 --- Level Level 36- 44 E9.4 s tauGRASP GRASP lifetime (1) 46- 54 E9.4 s tauFAC ? FAC lifetime (2) 56- 63 E8.3 s tauCIV3 ? CIV3 lifetime (3) 65- 74 E10.5 s tauMCHF MCHF lifetime (4)
Note (1): Present calculations from the GRASP code Note (2): Present calculations from the FAC code Note (3): Calculations of Mohan et al. (2005, J. Phys., 65, 75) from the CIV3 code Note (4): Calculations of Froese Fischer et al. (2006, At. Data Nucl. Data Tables, 92, 607) from the MCHF code.
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 3 I3 --- i [1,361] Lower level 5- 7 I3 --- j [2,362] Upper level 9- 17 E9.4 --- ECS5.00 Effective collision strength for logTe=5.00K 19- 27 E9.4 --- ECS5.20 Effective collision strength for logTe=5.20K 29- 37 E9.4 --- ECS5.40 Effective collision strength for logTe=5.40K 39- 47 E9.4 --- ECS5.60 Effective collision strength for logTe=5.60K 49- 57 E9.4 --- ECS5.80 Effective collision strength for logTe=5.80K 59- 67 E9.4 --- ECS6.00 Effective collision strength for logTe=6.00K 69- 77 E9.4 --- ECS6.20 Effective collision strength for logTe=6.20K 79- 87 E9.4 --- ECS6.40 Effective collision strength for logTe=6.40K 89- 97 E9.4 --- ECS6.60 Effective collision strength for logTe=6.60K
Acknowledgements: Kanti Aggarwal, K.Aggarwal(at)qub.ac.uk
(End) Patricia Vannier [CDS] 27-Aug-2009
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