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Table 2.
Absolute (A) and effective (A′) band strengths of CH3OH amorphous ice grown at the indicated temperatures.
| Label | Mode | Peak | Integration | A | A′ | A | A′ | A | A′ | A | A′ | A | A′ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| cm−1 | interval | (× 1018 cm molecule−1) | |||||||||||
| cm−1 | 100 K | 80 K | 60 K | 40 K | 20 K | ||||||||
| 4760 | 4908–4649 | – | 0.039 | – | 0.053 | – | 0.05 | – | 0.092 | – | 0.028 | ||
| 4395 | 4530–4201 | – | 0.417 | – | 0.494 | – | 0.508 | – | 0.477 | – | 0.578 | ||
| 4271 | 4316–4201 | – | 0.046 | – | 0.053 | – | 0.056 | – | 0.053 | – | 0.058 | ||
| 3983 | 4201–3886 | – | 0.339 | – | 0.31 | – | 0.305 | – | 0.337 | – | 0.289 | ||
| 3856 | 3888–3821 | – | 0.028 | – | 0.029 | – | 0.029 | – | 0.031 | – | 0.034 | ||
| ν1 | OH str. | ||||||||||||
| ν3, ν9 | CH3str. | 2950 | 3600–2700 | 153 | 145 | 159 | 148 | 155 | 146 | 156 | 150 | 151 | 142 |
| ν3, ν9 | CH3str. | 2830 | 2865–2750 | 4.51 | 4.48 | 4.88 | 4.74 | 4.89 | 4.72 | 4.06 | 4.97 | 5.06 | 4.86 |
| 2570 | 2710–2400 | 2.92 | 2.75 | 3.18 | 2.95 | 3.11 | 2.93 | 3.09 | 2.99 | 2.93 | 2.74 | ||
| 2240 | 2300–2204 | 0.22 | 0.22 | 0.24 | 0.24 | 0.24 | 0.24 | 0.24 | 0.24 | 0.22 | 0.22 | ||
| 2043 | 2105–2014 | 0.31 | 0.32 | 0.33 | 0.33 | 0.31 | 0.31 | 0.31 | 0.3 | 0.27 | 0.24 | ||
| ν4, ν5, | CH3bend | ||||||||||||
| ν6, ν10 | OH bend | 1460 | 1655–1302 | 11 | 8.91 | 11.7 | 9.39 | 11.3 | 9.01 | 11 | 9.06 | 11 | 8.05 |
| ν7 | CH3 rock | 1126 | 1178–1103 | 1.39 | 1.17 | 1.57 | 1.33 | 1.59 | 1.32 | 1.65 | 1.33 | 1.61 | 1.35 |
| ν8 | CO str. | 1027 | 1103–999 | 15.9 | 16.9 | 16.9 | 17.4 | 16.4 | 17 | 16.4 | 17.7 | 16.1 | 15.6 |
| ν12 | Torsion | 678 | 992–639 | 19 | 19.4 | 19.2 | 23.2 | 18.3 | 18.6 | 19.3 | 15.1 | 18.1 | 22.9 |
Notes. First two columns: mode assignment (Gálvez et al. 2009); Third column: wavenumber of the strongest peak in the integration interval; Fourth column: integration interval.
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