2
   18    7    1  3.3700e-10   0.64090 1.8360e+02 3.3230e+07   0.03200  1.7170e+06
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%file:  ar_7.rrparams
 Radiative recombination coefficients
Altun, Z., Yumak, I., Badnell, N.R., Loch, S.D., Pindzola, M.D.
2007, A&A, 474, 1051
http://cdsads.u-strasbg.fr/cgi-bin/bib_query?2007A%26A...474.1051A
Dielectronic recombination data for dynamic finite-density plasmas. XIII. The magnesium isoelectronic sequence
 produced for the CHIANTI atomic database for astrophysical spectroscopy
 created by Ken Dere (GMU):  Wed Feb 15 11:06:49 2012
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