Journal
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume 33, Issue 4, Pages 597-613Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/33/4/301
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Effective collision strengths are evaluated from electron-impact excitation collision strengths of doubly ionized atomic neon (Ne III) calculated in the close-coupling approximation using the nb initio R-matrix method. The 56 fine-structure levels arising from the 28 LS target states; 2s(2)2p(4), 2s(2)2p(3) 2s(2)2p(3)3l (l = s, p, d) and 2s(2)2p(3)4s are retained in the present calculation. The effective collision strengths (Y) for all forbidden transitions within the 1s(2)2s(2)2p(4) P-3(2),1,0, D-1(2), S-1(0) ground configuration levels are obtained by averaging the electron collision strengths (ht), for a wide range of incident electron energies, over a Maxwellian distribution of velocities. Results are presented for electron temperatures in the range 1000-1 000 000 K, applicable to many laboratory and astrophysical plasmas. We believe that the results are the most accurate to date and so should be used in preference to previous values available in the literature.
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