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Table 7
Fit coefficients for dielectronic recombination rate coefficients (see Eq. (3)).
| Target | ||||||||
| Iona | Level | c 1 | c 2 | c 3 | c 4 | c 5 | c 6 | c 7 |
|
|
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| Se+ | 1 | 5.895(–8) | 1.516(–7) | 2.154(–6) | 4.509(–6) | 7.933(–4) | 2.944(–3) | 2.944(–3) |
| 2b | 4.849(–9) | 4.750(–8) | 1.915(–7) | 1.839(–6) | 1.633(–4) | 2.211(–3) | 7.745(–6) | |
| 3 | 2.580(–8) | 4.667(–8) | 2.042(–6) | 2.148(–3) | 5.616(–4) | ... | ... | |
| 4 | 2.086(–8) | 2.435(–7) | 2.120(–6) | 3.332(–7) | 3.652(–6) | 1.713(–3) | 1.929(–4) | |
| 5 | 2.547(–7) | 1.297(–7) | 4.131(–4) | 2.075(–3) | 2.433(–6) | ... | ... | |
| Se2+ | 1 | 4.841(–6) | 4.993(–5) | 3.566(–5) | 9.558(–5) | 9.458(–3) | 1.988(–5) | ... |
| 2 | 1.830(–6) | 5.312(–6) | 1.432(–5) | 2.280(–5) | 5.604(–3) | 2.176(–3) | ... | |
| 3 | 1.686(–8) | 2.146(–7) | 5.827(–7) | 2.436(–6) | 1.391(–4) | 6.526(–3) | ... | |
| 4c | 3.875(–8) | 1.641(–6) | 3.522(–3) | 3.732(–3) | -3.333(–4) | ... | ... | |
| 5 | 7.246(–13) | 9.784(–9) | 3.270(–6) | 2.470(–5) | 2.923(–4) | 1.598(–3) | 1.609(–3) | |
| Se3+ | 1 | 1.268(–6) | 2.651(–6) | 1.386(–5) | 1.166(–4) | 3.731(–3) | 6.768(–3) | 6.499(–3) |
| 2 | 2.286(–6) | 3.420(–6) | 4.948(–5) | 4.206(–4) | 1.030(–2) | ... | ... | |
| Se4+ | 1 | 1.505(–5) | 3.440(–5) | 2.571(–4) | 2.806(–3) | 2.952(–2) | ... | ... |
| Se5+ | 1 | 1.107(–5) | 2.896(–5) | 8.937(–5) | 6.877(–5) | 1.457(–2) | 1.213(–2) | ... |
| Se6+ | 1 | 2.771(–6) | 3.733(–5) | 1.459(–4) | 7.999(–4) | 5.106(–3) | 1.052(–2) | ... |
|
|
||||||||
| E 1 | E 2 | E 3 | E 4 | E 5 | E 6 | E 7 | ||
|
|
||||||||
| Se+ | 1 | 1.036(3) | 1.963(3) | 4.529(3) | 1.464(4) | 1.217(5) | 1.754(5) | 1.772(5) |
| 2b | 8.714(1) | 2.241(2) | 7.538(2) | 1.046(4) | 9.325(4) | 1.525(5) | 1.764(6) | |
| 3 | 9.716(1) | 1.663(3) | 1.077(4) | 1.330(5) | 2.180(5) | ... | ... | |
| 4 | 2.655(2) | 3.997(2) | 9.086(2) | 1.797(3) | 3.584(4) | 1.336(5) | 2.199(5) | |
| 5 | 8.821(2) | 2.098(3) | 9.386(4) | 1.423(5) | 8.491(5) | ... | ... | |
| Se2+ | 1 | 1.289(2) | 5.862(2) | 1.935(3) | 7.117(4) | 1.957(5) | 1.719(6) | ... |
| 2 | 6.188(1) | 3.923(2) | 2.220(3) | 3.978(4) | 1.797(5) | 2.263(5) | ... | |
| 3 | 4.308(2) | 9.211(2) | 3.360(3) | 1.096(4) | 8.181(4) | 1.899(5) | ... | |
| 4c | 4.521(3) | 1.678(4) | 1.429(5) | 2.330(5) | 5.738(5) | ... | ... | |
| 5 | 1.158(3) | 5.031(3) | 1.522(4) | 3.687(4) | 9.171(4) | 1.416(5) | 1.657(5) | |
| Se3+ | 1 | 7.565(2) | 1.959(3) | 6.654(3) | 3.054(4) | 1.518(5) | 2.134(5) | 2.156(5) |
| 2 | 6.470(2) | 3.122(3) | 1.519(4) | 6.767(4) | 1.908(5) | ... | ... | |
| Se4+ | 1 | 5.954(2) | 3.483(3) | 2.477(4) | 1.053(5) | 1.886(5) | ... | ... |
| Se5+ | 1 | 3.417(2) | 2.862(3) | 1.556(4) | 4.233(4) | 1.420(5) | 1.941(5) | ... |
| Se6+ | 1 | 2.567(3) | 8.368(3) | 2.392(4) | 1.260(5) | 5.466(5) | 1.186(6) | ... |
Notes. Coefficients ci are in cm3 s-1 K3/2, and Ei are in K. The fits are accurate to within 5% over the temperature range (101−107)z2 K, unless otherwise noted. The notation x(y) denotes x × 10y.
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