Table 2
Fitting parameters of RR weighted electron energy loss factors for H i, He i and Fe xx.
| s | Z | Case | a 0 | b 0 | c 0 | a 1 | b 1 | a 2 | b 2 | δ max | |||||||||||
|
|
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| 1 | 1 | A | 8.655E+00 | 5.432E-01 | 0.000E+00 | 1.018E+01 | 5.342E-01 | 0.000E+00 | 0.000E+00 | 1.2% | |||||||||||
| 1 | 1 | B | 2.560E+00 | 4.230E-01 | 0.000E+00 | 2.914E+00 | 4.191E-01 | 0.000E+00 | 0.000E+00 | 2.1% | |||||||||||
| 2 | 2 | A | 2.354E+00 | 3.367E-01 | 0.000E+00 | 6.280E+01 | 8.875E-01 | 2.133E+01 | 5.675E-01 | 1.5% | |||||||||||
| 2 | 2 | B | 1.011E+04 | 1.348E+00 | 4.330E-03 | 1.462E+04 | 1.285E+00 | 0.000E+00 | 0.000E+00 | 3.5% | |||||||||||
| 7 | 26 | A | 2.466E+01 | 4.135E-01 | 0.000E+00 | 2.788E+01 | 4.286E-01 | 0.000E+00 | 0.000E+00 | 2.1% | |||||||||||
Notes. For HI and He II, both Case A and Case B results are included. s is the isoelectronic sequence number of the recombined ion, Z is the atomic number of the ion, a0−2, b0−2 and c0 are the fitting parameters and δmax is the maximum deviation (in percent) between the “best-fit” and original calculation. Case A and Case B refers to βt/αt and βn ≥ 2/αn ≥ 2 RR weighted electron energy loss factors, respectively. Machine readable fitting parameters and maximum deviation (in percent) for the total weighted electron energy loss factors for all the ions considered here are available on CDS.
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