On the frequency of NH+ and ND | Astronomy & Astrophysics (A&A)

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Table 9:

Hyperfine components and A_ul Einstein spontaneous emission coefficients of the (J: 2-1) transition of N₂D⁺.
J'	F₁'	$F' \rightarrow J$		F₁	F	Frequency^a	A_ul
2	2	2	1	2	3	154 215.0138	7.676(-6)
2	2	1	1	2	1	154 215.1417	3.701(-5)
2	2	3	1	2	3	154 215.2619	4.387(-5)
2	2	2	1	2	2	154 215.3052	3.427(-5)
2	1	1	1	0	1	154 215.3991	1.097(-4)
2	2	3	1	2	2	154 215.5533	5.483(-6)
2	1	2	1	0	1	154 215.6021	1.097(-4)
2	2	1	1	2	2	154 215.6273	1.234(-5)
2	1	0	1	0	1	154 215.8617	1.097(-4)
2	2	2	1	1	1	154 216.7277	1.110(-4)
2	3	3	1	2	3	154 216.7920	2.193(-5)
2	2	2	1	1	2	154 216.8629	3.701(-5)
2	2	1	1	1	1	154 217.0498	6.169(-5)
2	3	3	1	2	2	154 217.0834	1.755(-4)
2	3	2	1	2	1	154 217.1055	1.658(-4)
2	2	3	1	1	2	154 217.1110	1.481(-4)
2	3	4	1	2	3	154 217.1807	1.974(-4)
2	2	1	1	1	2	154 217.1850	4.113(-6)
2	3	2	1	2	3	154 217.2998	8.773(-7)
2	2	1	1	1	0	154 217.4764	8.225(-5)
2	3	2	1	2	2	154 217.5912	3.071(-5)
2	1	1	1	2	1	154 217.6972	1.371(-6)
2	1	2	1	2	1	154 217.9002	5.483(-8)
2	1	2	1	2	3	154 218.0944	4.606(-6)
2	1	0	1	2	1	154 218.1598	5.483(-6)
2	1	1	1	2	2	154 218.1828	4.113(-6)
2	1	2	1	2	2	154 218.3858	8.225(-7)
2	1	1	1	1	1	154 219.6053	2.056(-5)
2	1	1	1	1	2	154 219.7405	3.427(-5)
2	1	2	1	1	1	154 219.8083	2.056(-5)
2	1	2	1	1	2	154 219.9435	6.169(-5)
2	1	1	1	1	0	154 220.0320	2.742(-5)
2	1	0	1	1	1	154 220.0679	8.225(-5)

^a The frequency uncertainty is $\pm$ 2.1 kHz for all hyperfine components.

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