J/A+A/407/769 Excitation rates for transitions in Ca XV (Aggarwal+, 2003)
Excitation rates for transitions in Ca XV.
Aggarwal K.M., Keenan F.P.
<Astron. Astrophys. 407, 769 (2003)>
=2003A&A...407..769A 2003A&A...407..769A
ADC_Keywords: Atomic physics
Keywords: atomic data - atomic processes
Abstract:
Collision strengths for transitions among the energetically lowest 46
fine-structure levels belonging to the (1s2) 2s22p2, 2s2p3,
2p4, and 2s22p3l configurations of Ca XV are computed, over a wide
electron energy range below 300Ryd, using the Dirac Atomic R-matrix
Code (DARC) of Norrington & Grant (2003, Comput. Phys. Comm., in
preparation). Resonances in the threshold region have been resolved in
a fine energy mesh, and excitation rates are determined over a wide
electron temperature range below 107K. The results are compared with
those available in the literature, and the accuracy of the data is
assessed.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 51 46 Target levels of Ca XV and their
threshold energies (in Ryd)
table34.dat 126 1035 Effective collision strengths for transitions in
Ca XV. (table3: I=1 to 5, table4: I= 6 to 45)
tables.tex 161 1527 LaTeX version of tables 1-4
--------------------------------------------------------------------------------
See also:
VI/74 : Atomic Energy Level Data (NIST 1993)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Index [1/46]+ Index
4- 18 A15 --- Conf Configuration
21- 30 A10 --- Level Level
33- 39 F7.4 Ry Expt ? Sugar & Corliss (1985, Cat. VI/74)
threshold energy
45- 51 F7.4 Ry GRASP Aggarwal et al. (1992ApJS...80..453A 1992ApJS...80..453A)
threshold energy
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table34.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- I [1/45]+= I transition
4- 5 I2 --- J [1/46] J transition
8- 16 E9.3 --- ECS5.00 Effective collision strength at logT(K)=5.00
19- 27 E9.3 --- ECS5.20 Effective collision strength at logT(K)=5.20
30- 38 E9.3 --- ECS5.40 Effective collision strength at logT(K)=5.40
41- 49 E9.3 --- ECS5.60 Effective collision strength at logT(K)=5.60
52- 60 E9.3 --- ECS5.80 Effective collision strength at logT(K)=5.80
63- 71 E9.3 --- ECS6.00 Effective collision strength at logT(K)=6.00
74- 82 E9.3 --- ECS6.20 Effective collision strength at logT(K)=6.20
85- 93 E9.3 --- ECS6.40 Effective collision strength at logT(K)=6.40
96-104 E9.3 --- ECS6.60 Effective collision strength at logT(K)=6.60
107-115 E9.3 --- ECS6.80 Effective collision strength at logT(K)=6.80
118-126 E9.3 --- ECS7.00 Effective collision strength at logT(K)=7.00
--------------------------------------------------------------------------------
Acknowledgements: Kanti Aggarwal
References:
Sugar & Corliss, 1985, J. Phys. Chem. Ref. Data Suppl., 14, 97
(End) Patricia Bauer [CDS] 04-Sep-2003