Terahertz spectroscopy of the CHD radical () | Astronomy & Astrophysics (A&A)

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Table 1

Observed rotational transitions frequencies of CHD (), in MHz.

Transition	Component^a	ν_obs^b	ν_obs − ν_calc

6₀₆ ← 5₁₅	F₁	581 021.489(60)^c	0.046
	F₂	581 506.679(20)	−0.012
	F₃	581 580.606(50)	0.040
7₀₇ ← 6₁₆	F₁	946 609.805(40)	−0.022
	F₂	946 800.636(25)	0.019
	F₃	947 121.971(60)	−0.060

Notes. The standard deviation of the fit is 38 kHz. Calculated frequencies were obtained from molecular constants given in Table 2.

^(a)

ΔJ = ΔN = 1 fine-structure components. For the upper and lower energy levels, F₁: J = N + 1, F₂: J = N, F₃: J = N − 1.

^(b)

Values in parentheses are 1σ experimental error on the last digits.

^(c)

Hyperfine-structure for this line was partly resolved as a doublet, and the average of the two observed transition frequencies was used in the least-squares analysis.

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