copjl#be_jl#c2j.dat
Resolved Specific Ion Data Collections
- Ion
- C2+
- Temperature Range
- 0.776 eV → 155 eV
ADF04
- Filename
- copjl#be_jl#c2j.dat
- Full Path
- adf04/copjl#be/copjl#be_jl#c2j.dat
Download data
- Spontaneous Emission: C+2(i) → C+2(j) + hv
- Electron Impact Excitation: C+2(i) + e → C+2(j) + e
| 2s2(1s0) 1S0.0 | 0.0 cm-1 |
| 2s2p(3p0) 3P0.0 | 52367.1 cm-1 |
| 2s2p(3p1) 3P1.0 | 52390.8 cm-1 |
| 2s2p(3p2) 3P2.0 | 52447.1 cm-1 |
| 2s2p(1p1) 1P1.0 | 102352.0 cm-1 |
| 2p2(3p0) 3P0.0 | 137426.0 cm-1 |
| 2p2(3p1) 3P1.0 | 137454.0 cm-1 |
| 2p2(3p2) 3P2.0 | 137502.0 cm-1 |
| 2p2(1d2) 1D2.0 | 145876.0 cm-1 |
| 2p2(1s0) 1S0.0 | 182520.0 cm-1 |
| 2s3s(3s1) 3S1.0 | 238213.0 cm-1 |
| 2s3s(1s0) 1S0.0 | 247170.0 cm-1 |
| 2s3p(1p1) 1P1.0 | 258931.0 cm-1 |
| 2s3p(3p0) 3P0.0 | 259706.0 cm-1 |
| 2s3p(3p1) 3P1.0 | 259711.0 cm-1 |
| 2s3p(3p2) 3P2.0 | 259724.0 cm-1 |
| 2s3d(3d1) 3D1.0 | 270011.0 cm-1 |
| 2s3d(3d2) 3D2.0 | 270012.0 cm-1 |
| 2s3d(3d3) 3D3.0 | 270015.0 cm-1 |
| 2s3d(1d2) 1D2.0 | 276483.0 cm-1 |
Dependents
Contributors
- Jim Lang
- K P Dere
- Keith Berrington
- Douglas Sampson
- Allan Whiteford
+ 2 6 3 386241. ----------------------------------------------------------------------- Energy Levels The results from NSRDS NBS3 SECT 3 were used. These were the same as the results of Edlen (Phys. Scr 32, 86, 1985 and 28, 51, 1983) who only considered n=2 levels. The NSRDS values are also those of Moore and Gallacher "Tables of Spectra of hydrogen, carbon, nitrogen and oxygen atoms and ions" CRC press 1993. Ionisation Potential As energy levels. A Values For transitions between n = 2 levels the results of the compilation by Allard et al (Astron Astrophys Suppl Ser 84, 563, 1990) were used and for values not given by them the results of Nussbaumer and Storey (Astron Astrophys 74, 244, 1979) were used. The Nusssbaumer and Storey results were adopted for forbidden transitions by Allard et al. For the 2-3 and 3-4 transitions the results of Idrees and Das (J Phys B 22, 3609, 1989 were used. For transitions involving n = 3 levels again the results of Allard et al were adopted. For the important 2s2 1S - 2s2p 3P1 transition Allard et al recommend a value of 93.98 s-1. Recently Kwong et al (Ap J 411, 431, 1993) have published a measured value of 121 +/- 7 s-1. There have been two recent calculation of this rate, Fleming et al (Phys. Scr 49, 316, 1994) giving 104 +/-4 s-1 and Fischer (Phys Scr 49, 323, 1994) giving 103 +/- 3 s-1. Here we adopt 104 s-1. Collision Data The data recommended in a review by Berrington (ADNDT 57, 71, 1994) are adopted. The results of Berrington (J Phys B, 18, L395, 1985) and Berrington et al (J Phys B 22, 665, 1989 and JET Report JT7/11345) were adopted for transitions between n=2 levels and for transitions involving levels 3 respectively. These results were obtained from a 12 eigenstate R-matrix calculation. The 12 states correspond to the 20 lowest fine structure levels. For transitions betweeen n = 2 levels the partial wave expansion was for total angular momentum L <= 9. For some transitions the partial wave expansion is slowly convergent and care was taken to allow for this. For transitions involving n=3 levels it appears that partial waves up to L <= 11 ware included. However, the slow convergence of the partial wave expansion was a problem which was dealt with by writing a new no- exchange R-matrix package. In addition for dipole allowed transitions a top-up procedure was adopted, care being taken that the Coulomb-Bethe approximation was valid when it was applied. These calculations gave effective collision strengths between LS terms. Berrington (ADNDT 57, 71, 1994) in a review recommends the work of Berrington et al (ADNDT 33, 195, 1985) for fine structure transitions involving 2s2p 3P or 2p2 3P. These recommendations were adopted. For the former Keenan et al (Ap J 389, 443, 1992) give the unpublished rates from Berrington's 1985 calculation. However they are at most 7% different (2-4, lowest temperature value) and the Keenan et al results are only at three low close temperature. To obtain the fine structure collision rates statistical weight factors were used except for the transitions given in the tables below. The tables give the percentages of the total collision strength going into each of the fine structure transitions at a reduced temperature of 1e4. 2s2p 3Pj - 2p2 3Pj' j j' NIV OV OV NeVII NeVII AQ Use (CC) (CC) (DW) (CC) (DW) 0 0 0.16 0.115 0.09 0.08 0.07 0.16 0 1 10.67 10.8 11.23 10.79 11.07 11.1 10.7 0 2 0.35 0.214 0.11 0.12 0.09 0.35 1 0 10.72 10.76 11.23 10.79 10.88 11.1 10.7 1 1 8.82 8.65 7.71 8.56 8.57 8.33 8.8 1 2 13.99 13.93 12.56 14.19 14.02 12.89 14.0 2 0 0.35 0.21 0.11 0.12 0.08 0.35 2 1 14.15 13.99 14.26 14.19 14.02 13.89 14.2 2 2 40.81 41.38 42.72 41.16 41.22 41.67 40.8 The values adopted are close to that of N IV. The N IV calculation is by Ramsbottom et al (see adf04 file), the O V CC data are from Kato, Lang and Berrington (see adf04 file). The DW calculations are Sampson (see copsm#be). The Ne VII data are from ADF04 file (JL95). 2s2p 3Pj - 2s3d 3Dj' j j' NIV OV OV AQ (CC) (CC) (CC1) NeVII 0 1 9.09 9.04 9.74 11.11 0 2 1.11 1.13 0.78 0 3 0.96 1.01 0.77 1 1 8.30 8.26 8.37 8.33 1 2 21.48 21.32 22.88 25.00 1 3 3.48 3.61 2.62 2 1 2.73 2.75 2.22 0.56 2 2 10.91 10.72 10.23 8.33 2 3 41.95 42.17 42.39 46.67 The values adopted are those of N IV. The N IV calculation is by Ramsbottom et al (see adf04 file), the O V CC data are from Kato, Lang and Berrington (see adf04 file) and CC1 is adf04 from 89 (or 90). 2s2p 3Pj - 2s3p 3Pj' j j' NIV OV OV NeVII (CC) (CC) (CC1) (DW) 0 0 6.87 7.00 8.24 5.51 0 1 2.06 1.89 1.05 0.54 0 2 2.16 2.36 1.78 1.12 1 0 2.06 1.92 1.04 0.51 1 1 23.77 24.52 26.88 17.46 1 2 7.37 7.36 5.33 39.96 2 0 2.19 2.45 1.79 1.11 2 1 7.42 7.66 5.31 2.44 2 2 46.09 44.86 48.58 31.39 The values adopted are those of N IV. The N IV calculation is by Ramsbottom et al (see adf04 file), the O V CC data are from Kato, Lang and Berrington (see adf04 file) and CC1 is adf04 from 89 (or90). The DW calculation for Ne VII is from Sampson et al (1984) from JL95. 2p2 3Pj - 2s3p 3Pj' j j' NIV OV NeVII AQ (CC) (CC) (DW) 0 0 0.86 0.14 0.24 0 1 6.75 0.84 10.19 11.1 0 2 3.23 0.77 0.72 1 0 6.76 0.85 10.11 11.11 1 1 10.00 1.76 8.87 8.33 1 2 15.64 3.08 14.67 12.89 2 0 3.22 0.72 0.68 2 1 17.23 2.80 13.92 13.89 2 2 36.31 89.04 40.61 41.67 The values adopted are those of N IV. The N IV calculation is by Ramsbottom et al (see adf04 file), the O V CC data are from Kato, Lang and Berrington (see adf04 file). The DW calculation for Ne VII is from Sampson et al (1984) from JL95. 2p2 3Pj - 2s3d 3Dj' j j' NIV OV NeVII (CC) (CC) (DW) 0 1 2.73 3.61 2.94 0 2 5.98 4.33 6.36 0 3 2.28 3.09 2.02 1 1 10.19 8.49 10.80 1 2 9.87 12.32 10.00 1 3 12.89 12.32 12.74 2 1 7.69 7.79 7.18 2 2 17.27 16.50 17.46 2 3 31.11 31.56 30.51 The values adopted are essentially that of N V. The N IV calculation is by Ramsbottom et al (see adf04 file), the O V CC data are from Kato, Lang and Berrington (see adf04 file). The DW data for Ne VII are from Sampson et al (1984) from JL95. 2s3p 3Pj - 2s3d 3Dj' j j' OV AQ (CC) 0 1 9.98 11.11 0 2 0.19 0 3 0.24 1 1 7.54 8.33 1 2 25.52 25.00 1 3 0.74 2 1 1.02 0.56 2 2 9.29 8.33 2 3 45.48 46.17 The values adopted are for O V. The O V CC data are from Kato, Lang and Berrington (see adf04 file). In processing the 2p2 3P - 2s3p 3P data, it was noted that this is given as a forbidden transition. However, it has a fairly large A value. So allowed behaviour was forced on it when running ADAS 102. At the highest temperature given here this gives a 1% increase in the effective collision strength between the LS terms. J LANG June 1995. Update: 03/06/02 A D Whiteford - amended ion charge from 3 to 2. ----------------------------------------------------------------------- --------------------------------------------------------------------------------- ---------------------------------------------------------------------------------