Table A.1
Infrared features measured at 9 K in both samples before and during irradiation and their possible assignments.
| Wave number | Identification | Assignment | A | Reference |
|---|---|---|---|---|
| cm−1 | ×10−17 cm molec−1 | |||
| 4538 | CH4 | ν2 + ν3 | a | |
| 4502 | CD4 | 2ν3 + νL | b | |
| 4477 | CD4 | 2ν3 | c | |
| 4337 | CH4 | ν3 + ν4 | a | |
| 4327 | CH4 | ν3 + ν4 | a | |
| 4318 | CH4 | ν3 + ν4 | a | |
| 4310 | CH4 | ν3 + ν4 | a | |
| 4194 | CD4 | ν3 + 2ν4 | c | |
| 4122 | CH4 | 2ν1 + ν4 | a | |
| 3852 | CH4 | 3ν4 | a | |
| 3270 | H-C ≡C-R | ν(C-H) | d | |
| 3226 | CD4 | ν3 + ν4 | c | |
| 3091 | CD4 | ν1 + ν4 | c | |
| 3087 | CD4 | ν1 + ν4 | c | |
| 3022 | CH4 | ν3 | a | |
| 2985 | C2H6 | ν10 | d | |
| 2983 | CHD3 | ν1 | c | |
| 2926 | CD4 | 3ν4 | c | |
| 2914 | CH4 | ν1 | a | |
| 2832 | CH4 | ν2 + ν4 | a | |
| 2827 | CH4 | ν2 + ν4 | a | |
| 2826 | CH4 | ν2 + ν4 | a | |
| 2820 | CH4 | ν2 + ν4 | a | |
| 2814 | CH4 | ν2 + ν4 | a | |
| 2617 | CH4 | ν2 + ν4 | a | |
| 2602 | CH4 | 2ν4 | a | |
| 2597 | CH4 | 2ν4 | a | |
| 2402 | C2D2 | ν3 | e | |
| 2347 | N2 | ν1 | 0.0015 | f |
| 2328 | N2 | ν1 | 0.00022 | f |
| 2251 | CD4 | ν3 | c | |
| 2242 | CD4 | ν3 | c | |
| 2237 | 13CD4 | ν3 | c | |
| 2212 | C2H4N4 | g | ||
| 2139 | CO | 1.1 | h | |
| 2100 | HCN | i | ||
| 2091 | CN− | j | ||
| 2073 | CD4 | ν2 + ν4 | c | |
| 2036 | HNC | ν3 | k | |
| 1975 | CD4 | 2ν4 | c | |
| 1887 | C2 HD | ν2 | e | |
| 1656 | N3 | 0.0072 | l | |
| 1638 | NH3 | ν2 | 0.47 | m |
| 1465 | C2 H6 | 0.416 | n | |
| 1454 | NH |
ν4 | o | |
| 1305 | CH4 | ν4 | 0.61 | a |
| 1160–1060 | NH3 | ν2 umbrella | 1.7 | p |
| 990 | CD4 | ν4 | c | |
| 825 | C2 H6 | ν12 | 1.6 | q |
| 757 | C3 H8 | d |
References. a: Bennett et al. (2006); b: Calvani et al. (1989); c: He et al. (2010); d: Gerakines et al. (1996); e: Bottger et al. (1964); f: de Barros et al. (2015); g: Gerakines et al. (2004); h: Palumbo & Strazzulla (1993); i: Burgdorf et al. (2010); j: Moore & Hudson (2003); k: Wu et al. (2013); l: Hudson & Moore (2002); m: Sandford et al. (1993); n: Moore & Hudson (1998); o: Schutte et al. (2003); p: Sandford et al. (1993); q: Oberg et al. (2009).
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