J/A+A/432/731 Effective collision strengths for C II (Wilson+, 2005) ================================================================================ Effective collision strengths for electron impact excitation of C II. Wilson N.J., Bell K.L., Hudson C.E. =2005A&A...432..731W ================================================================================ ADC_Keywords: Atomic physics Keywords: atomic processes - line: formation - methods: analytical Description: The effective collision strengths are presented in this table for all transitions among the lowest 30 fine-structure levels belonging to the 2s^2^2p, 2s2p^2^, 2p^3^, 2s2p3s, 2s^2^3l (l=s,p,d) and 2s^2^4l (l=s,p,d,f) configurations of C II. The effective collision strengths have been calculated using the R-matrix method. Each fine-structure level is assigned an index number in Table 1 of the manuscript ranging from 1 to 30. These index values are used here in Table 2 to refer to particular transitions, eg. Index 2-8 denotes the transition 2s^2^2p 2PO(J=3/2) - 2s2p^2^ 3SE(J=1/2). The effective collision strengths for each transition are presented in rows for a number of electron temperatures ranging from log10(T)=3.00 to log10(T)=5.50. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 51 30 *LS energies relative to the 2s^2^2p ^2^P^o^ ground state of C II table1.tex 120 45 LaTeX version of table 1 table2.dat 104 432 Effective collision strengths for C II table2.tex 139 467 LaTeX version of table 2 -------------------------------------------------------------------------------- Note on table1.dat: Also noted is how the LS states split into J-levels and assignments of level indices to the target states are given. The observed values are the experimental energy levels compiled by NIST. -------------------------------------------------------------------------------- See also: J/A+A/436/1131 : Al III effective collision strengths (Hudson+ 2005) J/A+A/430/725 : N II effective collision strengths (Hudson+, 2005) J/A+A/399/799 : Fe XI trans. effective collision strengths (Aggarwal+, 2003) J/A+A/410/349 : Fe XV Effective collision strengths (Aggarwal+, 2003) J/A+A/418/363 : Cl II Effective collision strengths (Tayal+, 2004) J/A+A/418/1171 : FeXVIII-FeXXIII effective collision strengths (Bautista+ 2004) J/A+A/429/1117 : Fe XIII effective collision strengths (Aggarwal+, 2005) J/A+AS/103/273 : C-like ions Effective collision strengths (Lennon+ 1994) J/A+AS/108/1 : O-like ions Effective collision strengths (Butler+, 1994) J/A+AS/125/543 : Effective collision strengths for Mg VI (Ramsbottom+ 1997) Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 23 A23 --- State LS state 25- 31 F7.5 Ry Epres Present LS energy 34- 40 F7.5 Ry EObs Observed LS energy 43 I1 --- Nj Number split levels (how many J-levels exist for one configuration) 46- 48 A3 --- J J level 50- 51 I2 --- Index Level index -------------------------------------------------------------------------------- Byte-by-byte Description of file: table2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 --- i1 Index numbers of transition 3 A1 --- --- [-] 4- 5 I2 --- i2 Index numbers of transition 7- 14 E8.3 --- ECS3.00 Effective collision at log(T)=3.00 16- 23 E8.3 --- ECS3.25 Effective collision at log(T)=3.25 25- 32 E8.3 --- ECS3.50 Effective collision at log(T)=3.50 34- 41 E8.3 --- ECS3.75 Effective collision at log(T)=3.75 43- 50 E8.3 --- ECS4.00 Effective collision at log(T)=4.00 52- 59 E8.3 --- ECS4.25 Effective collision at log(T)=4.25 61- 68 E8.3 --- ECS4.50 Effective collision at log(T)=4.50 70- 77 E8.3 --- ECS4.75 Effective collision at log(T)=4.75 79- 86 E8.3 --- ECS5.00 Effective collision at log(T)=5.00 88- 95 E8.3 --- ECS5.25 Effective collision at log(T)=5.25 97-104 E8.3 --- ECS5.50 Effective collision at log(T)=5.50 -------------------------------------------------------------------------------- Acknowledgements: Claire Hudson, c.hudson(at)am.qub.ac.uk History: * 14-Mar-2005: Original version * 11-Jul-2006: An error in table2 was detected by the author, affecting 78 out of the 432 transitions; this table was replaced. ================================================================================ (End) Claire Hudson [Queens Univ. Belfast] 11-Jul-2006