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Table 1

Configuration-interaction expansions used for each Kr ion.

Ion Config. Seta Configurations

Kr0 Small (13) 4s2 4p6,  4s2 4p5 4d
Medium (391) [Small] + 4s2 4p5 5s,  4s2 4p5 5p,  4s2 4p4 4d 5s,  4s2 4p4 4d 5p
4s 4p6 5s,  4s 4p5 4d 5p,  3d9 4s2 4p6 4d
Large (768) [Medium] + 4s2 4p5 5d,  4s2 4p4 4d2,  4s2 4p4 4d 5d,  4s2 4p4 5s 5p
4s 4p5 4d2,  4s 4p5 4d 5s

Kr+ Small (31) 4s2 4p5,  4s2 4p4 4d,  4s 4p6
Medium (224) [Small] + 4s2 4p4 5s,  4s2 4p4 5p,  4s2 4p3 4d2,  4s 4p5 4d
Large (753) [Medium] + 4s2 4p4 5d,  4s2 4p3 5p2,  4s 4p5 5s,  4s 4p5 5p
4s 4p4 4d2,  4s 4p4 4d 5s,  3d9 4s2 4p5 4d

Kr2+ Small (10) 4s2 4p4,  4s 4p5,  4p6
Medium (48) [Small] + 4s2 4p3 4d
Large (595) [Medium] + 4s2 4p3 4f,  4s2 4p3 5s,  4s2 4p3 5p,  4s2 4p3 5d
4s2 4p2 4d2,  4s 4p4 4d,  4s 4p4 5s,  4s 4p4 4d 5s,  4s 4p4 5s 5p

Kr3+ Small (15) 4s2 4p3,  4s 4p4,  4p5
Medium (88) [Small] + 4s2 4p2 4d,  4s2 4p 4d2
Large (560) [Medium] + 4s2 4p2 5s,  4s2 4p2 5p,  4s2 4p2 5d,  4s2 4p 4d 5d
4s 4p3 4d,  4s 4p2 4d2,  4p4 4d,  4p4 5s

Kr4+ Small (32) 4s2 4p2,  4s2 4p 4d,  4s 4p3,  4p4
Medium (97) [Small] + 4s2 4d2,  4s 4p2 4d
Large (765) [Medium] + 4s2 4p 5s,  4s2 4p 5p,  4s2 4p 5d,  4s2 4d 5d
4s 4p2 4f,  4s 4p 4d2,  4p3 4d,  4p3 5s,  3d9 4s2 4p2 4d
3d9 4s2 4p 4d 5s

Kr5+ Small (40) 4s2 4p,  4s2 4d,  4s 4p2,  4s 4p 4d,  4p3
Medium (180) [Small] + 4s 4d2,  4p2 4d,  3d9 4s2 4p 4d
Large (546) [Medium] + 4s2 5s,  4s 4p 4f,  4s 4p 5s,  4s 4p 5p
4s 4p 5d,  4s 4d 5s,  4s 4d 5p,  4p2 4d,  4p2 5p
4p 4d2,  4p 4d 5s,  3d9 4s2 4d2,  3d9 4s2 4d 5s,  3d9 4s 4p3

Kr6+ Small (10) 4s2,  4s 4p,  4p2
Medium (26) [Small] + 4s 4d,  4p 4d
Large (421) [Medium] + 4s 5s,  4s 5p,  4s 5d,  4p 5s
4p 5p,  4d2,  4d 5s,  5s2,  5p2,  3d9 4s2 4d
3d9 4s2 5d,  3d9 4s 4p2,  3d9 4s 4p 4d,  3d9 4s 5s 5d

Notes. 

(a)

After the name of each configuration set, the number of levels is listed in parentheses.

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