Collision-Induced Infrared Absorption by Molecular Hydrogen Pairs at Thousands of Kelvin

Table 3

Dipole expansion coefficients 𝐴_{𝜆𝜆′Λ𝐿}(in a.u., multiplied by 10⁶) for H₂–H₂ with 𝑟₁=𝑟₂=1.449 a.u. Results from this calculation, compared with results of Meyer et al. [13] (MBF), Fu et al. [22] (FZB), long-range results [17, 18] through order 𝑅⁻⁷(LR), and quadrupole-induced dipole coefficients (QID).

	𝑅 (a.u.)	4.0	5.0	6.0	7.0	8.0	9.0	10.0
𝐴2021	This work	9983	2123	407	73	13	4	2
	MBF	10401	2190	429	84	20	7	—
	FZB	10385	2184	427	83	19	6	—
	LR	279	59	16	6	2	1	0
𝐴2023	This work	−2 00 65	−8 07 6	−3 72 5	−1 95 0	−1 12 4	−6 95	−4 55
	MBF	−1 99 67	−7 95 3	−3 68 8	−1 93 9	−1 11 9	−6 92	—
	FZB	−1 99 49	−7 94 6	−3 68 5	−1 93 8	−1 11 8	−6 92	—
	LR	−1 96 87	−7 65 2	−3 60 3	−1 92 1	−1 11 8	−6 95	−4 55
	QID	−1 76 28	−7 22 1	−3 48 2	−1 88 0	−1 10 2	−6 88	−4 51
𝐴2211	This work	402	86	18	3	0	0	0
	MBF	332	74	14	2	0	0	—
	FZB	332	74	14	2	0	0	—
	LR	−4 1	−9	−2	−1	0	0	0
𝐴2233	This work	2020	977	514	289	171	107	70
	MBF	1992	949	498	280	166	104	—
	FZB	1991	949	498	279	166	104	—
	LR	2588	1088	530	288	169	106	70
	QID	2726	1117	538	291	170	106	70
𝐴4043	This work	690	180	42	9	2	0	0
	LR	204	43	12	4	2	1	0
𝐴4045	This work	−8 45	−2 83	−9 7	−3 7	−1 6	−8	−4
	MBF	−1 52 3	−4 50	−1 35	−4 7	−1 9	−9	—
	FZB	−1 51 7	−4 47	−1 34	−4 6	−1 9	−9	—
	LR	−1 04 0	−2 73	−9 1	−3 6	−1 6	−8	−4