Table 1: Transition energies, (cm−1), line strengths, (a.u.), and transition probabilities, (s−1), for forbidden transitions (M1 and E2) of the ground state 3s23p4 configuration for Ar III. In table, denotes .

Transitions
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M1 transitions
3P1-1S033734.3632153.53a
32135d
32155e
30688g
30122.89h
3.36 (−3)4.48 (−3)a3.484.02a
3.972d
3.91f
3P2-1D214010.0a
13972d
14010e
17305.26g
16328.91h
2.16 (−3)a3.21 (−2)a
4.5 (−1)b
3.2 (−1)c
3.23 (−1)d
3.13 (−1)f
3P1-1D214914.1912897.83a
12865d
12898e
17647.36g
15275.43h
4.70 (−3)7.2 (−3)a8.41 (−2)8.3 (−2)a
12 (−2)b
8.5 (−2)c
8.43 (−2)d
8.22 (−2)f
3P2-3P11008.281112.17a
1107d
1112e
1131.74g
1053.41h
2.502.50a2.30 (−2)3.1 (−2)a
3.1 (−2)c
3.054 (−2)d
3.08 (−2)f
3P1-3P0428.35458.06a
463d
458e
468.96g
449.92h
2.002.00a4.23 (−3)5.19 (−3)a
5.2 (−3)c
5.354 (−3)d
5.17 (−3)f

E2 transitions
3P2-1S034742.6433265.7a
33242d
33267e
31819.69g
31176.37h
4.46 (−3)9.4 (−3)a2.53 (−2)4.3 (−2)a
3.493 (−2)d
4.17 (−2)f
1D2-1S018820.1619255.7a
19271d
19257e
14514.43g
14847.46h
0.87 (1)1.05 (1)a2.303.10a
2.693d
2.59f
3P2-1D214010.0a
13972d
14010e
16328.91h
1.2 (−1)a1.4 (−3)a
2.9(−3)c
1.362 (−3)d
1.14 (−3)f
3P1-1D214914.1912897.83a
12865d
12898e
15704.55g
15275.43h
1.08 (−2)1.6 (−2)a1.78 (−4)1.3 (−4)a
2.7 (−4)c
1.349 (−4)d
1.14 (−4)f
3P0-1D214485.8512439.77a
12402d
12440e
14825.51h
3.17 (−3)4.3 (−3)a4.52 (−5)2.9 (−5)a
7.0 (−5)b
5.8 (−5)c
2.038 (−5)d
2.21 (−5)f
3P2-3P01436.631570.23a
1570d
1570e
1600.70g
1503.41h
2.462.54a1.69 (−6)2.72 (−6)a
5.6 (−5)c
2.784 (−6)d
2.37 (−6)f
3P2-3P11008.281112.17a
1107d
1112e
1131.74g
1053.48h
5.505.7a2.14 (−7)3.6 (−7)a
7.4 (−7)c
3.617 (−7)d
3.13 (−7)f

Ref. [14], bRef. [27], cRef. [26], dRef. [22], eRef. [40], fRef. [24], gRef. [6], and hRef. [37].