J/A+A/510/A79Effective collision strengths for K II (Tayal+, 2010)

Electron impact excitation collision strength for transitions in K II. Tayal S.S., Zatsarinny O. <Astron. Astrophys. 510, A79 (2010)> =2010A&A...510A..79TADC_Keywords: Atomic physicsKeywords: atomic data - atomic processes - line formationAbstract: Oscillator strengths and electron impact excitation collision strengths for transitions between the 43 fine-structure levels of the 3p^{6}, 3p^{5}4s, 3p^{5}3d, 3p^{5}4p, 3p^{5}4d and 3p^{5}5s configurations in KII are calculated. Thermally averaged collision strengths are presented as a function of electron temperature for application to astrophysical plasmas.Description: The B-spline Breit-Pauli R-matrix method is used to investigate the electron impact excitation of forbidden and allowed transitions in singly ionized potassium. The relativistic effects have been incorporated through mass, Darwin and spin-orbit one-body operators in the Breit-Pauli Hamiltonian in the scattering calculation, while in the calculation of oscillator strengths the one-body and two-body relativistic operators are included. Flexible non-orthogonal sets of spectroscopic and correlation radial functions are used to obtain accurate description of KII levels and to represent the scattering functions. The 43 fine-structure levels of the 3p^{6}, 3p^{5}4s, 3p^{5}3d, 3p^{5}4p, 3p^{5}4d and 3p^{5}5s configurations have been considered in both the radiative and scattering calculations.File Summary:

FileName Lrecl Records Explanations

ReadMe 80 . This file levels.dat 21 43 Index and the corresponding level table2.dat 74 222 Oscillator strengths for dipole radiative E1 transitions in KII table3.dat 77 903 Collision strengths for transitions in KII table4.dat 117 903 Effective collision strengths for transitions in KII

See also: J/ApJ/526/544 : Collision strengths in SIII (Tayal+, 1999) J/ApJS/123/295 : Electron impact excitation in FeXI (Gupta+, 1999) J/A+A/418/363 : Effective collision strengths for ClII (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/A+A/486/629 : Effective collision strengths for CII (Tayal, 2008)Byte-by-byte Description of file: levels.dat

Bytes Format Units Label Explanations

1- 2 I2 --- Index [1,43] Index 4- 21 A18 --- Level Level

Byte-by-byte Description of file: table2.dat

Bytes Format Units Label Explanations

1- 18 A18 --- Initial Initial level of the transition 20 A1 --- --- [-] 22- 39 A18 --- Final Final level of the transition 41- 42 I2 --- i [1,26] Index of the initial level of the transition 44 A1 --- --- [-] 46- 47 I2 --- j [2,43] Index of the final level of the transition 49- 56 F8.2 0.1nm lambda Wavelength of the transition 58- 64 E7.3 --- f Present length value of oscillator strength 67- 74 E8.3 s-1 A Present length value of transition probability

Byte-by-byte Description of file: table3.dat

Bytes Format Units Label Explanations

1- 2 I2 --- i [1,42] i lower level index of the transition 4 A1 ---- --- [-] 6- 7 I2 --- j [2,43] j upper level index of the transition 9- 17 E9.4 --- CS2.1 Collision strength at 2.1Rydberg 19- 27 E9.4 --- CS4.0 Collision strength at 4.0Rydberg 29- 37 E9.4 --- CS6.0 Collision strength at 6.0Rydberg 39- 47 E9.4 --- CS8.0 Collision strength at 8.0Rydberg 49- 57 E9.4 --- CS12.0 Collision strength at 12.0Rydberg 59- 67 E9.4 --- CS16.0 Collision strength at 16.0Rydberg 69- 77 E9.4 --- CS20.0 Collision strength at 20.0Rydberg

Byte-by-byte Description of file: table4.dat

Bytes Format Units Label Explanations

1- 2 I2 --- i [1,42] i lower level index of the transition 4 A1 ---- --- [-] 6- 7 I2 --- j [2,43] j upper level index of the transition 9- 17 E9.4 --- ECS3.3 Effective collision strength at logT=3.3K 19- 27 E9.4 --- ECS3.6 Effective collision strength at logT=3.6K 29- 37 E9.4 --- ECS3.8 Effective collision strength at logT=3.8K 39- 47 E9.4 --- ECS4.0 Effective collision strength at logT=4.0K 49- 57 E9.4 --- ECS4.2 Effective collision strength at logT=4.2K 59- 67 E9.4 --- ECS4.4 Effective collision strength at logT=4.4K 69- 77 E9.4 --- ECS4.6 Effective collision strength at logT=4.6K 79- 87 E9.4 --- ECS4.8 Effective collision strength at logT=4.8K 89- 97 E9.4 --- ECS5.0 Effective collision strength at logT=5.0K 99-107 E9.4 --- ECS5.3 Effective collision strength at logT=5.3K 109-117 E9.4 --- ECS5.6 Effective collision strength at logT=5.6K

Acknowledgements: Swaraj Tayal, stayal(at)cau.edu(End)Patricia Vannier [CDS] 11-Dec-2009

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