Argon 4s and 4p Excited States Atomic Data Applied in ARC-JET Modeling

Table 1

List of the 15 lower energy levels of Ar I.

𝑖	c/c	𝑛	l	jK	LS	P.N.	𝐽	𝑔	E. exp.	Char.
1	3p	3	1		^1S0		0	1	0.000
2	4s	4	0	[3/2]2	^3P2	1s5	2	5	93143.7600	m
3	4s	4	0	[3/2]1	^3P1*	1s4	1	3	93750.5978	t
4	4𝑠^′	4	0	[1/2]0	^3P0	1s′3	0	1	94553.6652	m
5	4𝑠^′	4	0	[1/2]1	^1P1*	1s′2	1	3	95399.8276	t
6	4p	4	1	[1/2]1	^3S1	2p10	1	3	104102.0990	q-m
7	4p	4	1	[5/2]3	^3D3	2p9	3	7	105462.7596	q-m
8	4p	4	1	[5/2]2	^3D2	2p8	2	5	105617.2700
9	4p	4	1	[3/2]1	^3D1¤	2p7	1	3	106087.2598
10	4p	4	1	[3/2]2	^3P2	2p6	2	5	106237.5518	q-m
11	4p	4	1	[1/2]0	^3P0^∘	2p5	0	1	107054.2720
12	4𝑝^′	4	1	[3/2]1	^1P1¤	2p′4	1	3	107131.7086
13	4𝑝^′	4	1	[3/2]2	^1D2	2p′3	2	5	107289.7001
14	4𝑝^′	4	1	[1/2]1	^3P1	2p′2	1	3	107496.4166
15	4𝑝^′	4	1	[1/2]0	^1S0^∘	2p′1	0	1	108722.6194

𝑖: level index.
c/c: configuration and core description.
𝑗𝐾 description from NIST, LS description from our CbA calculations.
Unprimed for core ²P_3/2, primed for core ²P_1/2.
Symbols *, ¤, ° denote the most strongly mixed levels; all the levels with the same 𝐽 within a same configuration are mixed.
P.N.: Paschen notation.
E. exp.: experimental energy from NIST in cm⁻¹.
Char.: character of the level: transitory/metastable/quasimetastable.