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

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Table 7:

Hyperfine components and A_ul Einstein spontaneous emission coefficients of the (J: 6-5) transition of N₂H⁺.
J'	F₁'	$F' \rightarrow J$		F₁	F	Frequency^a	A_ul
6	6	6	5	6	5	558 963.93	7.081(-6)
6	6	5	5	6	5	558 964.39	2.929(-4)
6	6	7	5	6	7	558 964.41	2.951(-4)
6	6	6	5	6	6	558 964.42	2.871(-4)
6	6	5	5	6	6	558 964.88	8.368(-6)
6	6	7	5	6	6	558 964.92	6.148(-6)
6	5	5	5	4	5	558 965.91	4.195(-4)
6	6	6	5	5	6	558 965.97	2.929(-4)
6	7	7	5	6	7	558 965.98	2.213(-4)
6	5	5	5	6	5	558 966.18	6.916(-8)
6	5	4	5	4	3	558 966.38	9.969(-3)
6	5	5	5	4	4	558 966.39	1.007(-2)
6	5	4	5	4	5	558 966.39	5.179(-6)
6	5	6	5	4	5	558 966.42	1.049(-2)
6	6	5	5	5	6	558 966.44	2.421(-6)
6	6	5	5	5	4	558 966.44	1.020(-2)
6	6	6	5	5	5	558 966.45	1.025(-2)
6	7	6	5	6	7	558 966.46	1.310(-6)
6	6	7	5	5	6	558 966.47	1.054(-2)
6	7	6	5	6	5	558 966.47	1.059(-2)
6	7	7	5	6	6	558 966.48	1.062(-2)
6	7	8	5	6	7	558 966.50	1.085(-2)
6	5	4	5	6	5	558 966.67	2.490(-6)
6	5	5	5	6	6	558 966.67	2.421(-6)
6	5	6	5	6	7	558 966.68	2.431(-6)
6	5	6	5	6	5	558 966.69	4.092e-10
6	5	4	5	4	4	558 966.88	5.127(-4)
6	6	5	5	5	5	558 966.91	3.462(-4)
6	7	6	5	6	6	558 966.96	2.554(-4)
6	5	6	5	6	6	558 967.18	5.852(-8)
6	5	5	5	5	6	558 968.27	1.169(-5)
6	5	5	5	5	4	558 968.23	1.165(-5)
6	5	5	5	5	5	558 968.70	3.327(-4)
6	5	4	5	5	4	558 968.72	3.418(-4)
6	5	6	5	5	6	558 968.74	3.462(-4)
6	5	4	5	5	5	558 969.19	1.424(-5)
6	5	6	5	5	5	558 969.21	9.890(-6)

^a The frequency uncertainty is $\pm$ 0.18 MHz for all hyperfine components.

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