Free Access

Table 6

Fit coefficients for radiative recombination rate coefficients at high temperatures, valid from Tmax (see Table 5) to 107z2 K (see Eq. (3)).

Target
Iona Level c 1 c 2 c 3 c 4 c 5 c 6 c 7

Se+ 2 6.380(–8) 3.641(–7) 1.412(–6) 2.856(–6) 6.461(–6) 1.067(–4) 4.751(–4)
3 6.425(–8) 3.638(–7) 1.403(–6) 2.811(–6) 6.138(–6) 1.018(–4) 4.729(–4)
4 7.502(–8) 4.203(–7) 1.429(–6) 2.582(–6) 5.538(–6) 8.929(–5) 3.948(–4)
5 3.371(–8) 1.857(–7) 8.251(–7) 2.939(–6) 5.302(–6) 8.719(–5) 3.936(–4)
Se2+ 1 2.061(–6) 8.034(–6) 1.447(–5) 2.769(–4) 1.237(–3) 2.609(–3) ...
2 2.232(–6) 8.551(–6) 1.552(–5) 2.780(–4) 1.240(–3) 2.586(–3) ...
3 1.018(–5) 1.613(–5) 2.749(–4) 1.236(–3) 2.612(–3) ... ...
4 1.195(–5) 7.588(–5) 6.316(–4) 1.965(–3) 4.432(–3) ... ...
5 5.306(–6) 7.409(–6) 7.781(–5) 5.502(–4) 1.469(–3) 2.035(–3) ...
Se3+ 2 4.289(–5) 1.638(–3) 1.161(–2) 5.245(–3) 2.772(–2) ... ...

E 1 E 2 E 3 E 4 E 5 E 6 E 7

Se+ 2 6.920(2) 6.054(3) 2.936(4) 1.100(5) 6.510(5) 3.218(6) 1.207(7)
3 6.990(2) 6.080(3) 2.926(4) 1.087(5) 6.306(5) 3.137(6) 1.190(7)
4 6.984(2) 6.165(3) 2.893(4) 1.029(5) 6.244(5) 3.151(6) 1.194(7)
5 3.045(2) 2.838(3) 1.405(4) 6.763(4) 5.084(5) 3.075(6) 1.182(7)
Se2+ 1 3.108(3) 4.135(4) 3.780(5) 2.581(6) 1.008(7) 3.998(7) ...
2 4.231(3) 4.997(4) 4.748(5) 2.637(6) 1.015(7) 4.037(7) ...
3 3.628(4) 4.849(5) 2.644(6) 1.019(7) 4.124(7) ... ...
4 6.274(4) 1.334(6) 5.185(6) 2.057(7) 1.135(8) ... ...
5 2.145(4) 1.718(5) 1.457(6) 5.086(6) 1.786(7) 6.142(7) ...
Se3+ 2 6.867(4) 1.119(6) 3.421(6) 2.101(7) 9.183(7) ... ...

Notes. Coefficients ci are in cm3 s-1 K3/2, and Ei are in K. States whose RR rate coefficients are accurately described by Eqs. (1) and (2) (with coefficients given in Table 5) over the full temperature range (101−107)z2 K are not listed here. The fits are accurate to within 3% for Se+ levels 2–4, 4% for Se+ level 5, and  ≤2% otherwise. The notation x(y) denotes x × 10y.

(a)

Note that the ion and level numbers correspond to the target ion (i.e., before recombination).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.