Table 3
Comparison of the Maxwellian-averaged collision strengths 
at T = 0.01 keV of the C III line at 977Å (transition from 2s2p 1P1 to the ground state 2s2 1S0) between different plasma codes and atomic databases.
| Code |  |
Remarks |
|---|---|---|
| MEKAL | 10.48 | Based on [1] which uses a scaled value from the Fe results given by [2] using A = 0.5, B = 0.3 and E = 0.276 in Eq. (A7) of that paper. This paper cites the distorted wave calculations of [3]. |
| SPEX | 5.93 | Based on older FAC(a) calculations made by A.J.J. Raassen. |
| CHIANTI v. 9.0 | 4.93 | R-matrix calculations [4]. |
| OPEN ADAS | 4.51 | R-matrix calculations in combination with an intermediate coupling frame transformation [5]. |
| AtomDB v. 3.0.9 | 2.71 | Refers to CHIANTI 6 [6], [7]. |
Notes. (a) Flexible Atomic Code described by Gu (2002, 2008) https://github.com/flexible-atomic-code/fac References. [1] Landini & Monsignori Fossi (1990); [2] Mewe et al. (1985); [3] Bhatia & Mason (1981); [4] Berrington et al. (1985); [5] Fernández-Menchero et al. (2014); [6] Dere et al. (1997); [7] Dere et al. (2009).
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