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Table 2
Characterization of all bands identified in the pristine ice spectrum of the simulated Enceladus surface at 20 K.
| Position | Molecule | Vibrational mode | |
| cm-1 | μm | ||
|
|
|||
| 3702 | 2.70 | CO2 | comb (ν2 + ν3) |
| 3648 | 2.74 | H2O | dangling bonds |
| 3380 | 2.96 | NH3 | N−H stretch |
| 3298 | 3.03 | H2O* | O−H stretch |
| 3008 | 3.32 | CH4 | C−H stretch |
| 2835 | 3.53 | CH3OH | C−H stretch |
| 2342 | 4.27 | CO2 | C=O stretch |
| 2278 | 4.39 | 13CO2 | C=O stretch |
| 1643 | 6.09 | H2O | O−H bend |
| 1479 | 6.76 | CH3OH | CH3 deformation |
| 1304 | 7.67 | CH4 | C−H deformation |
| 1124 | 8.90 | NH3 | NH umbrella |
| 1017 | 9.83 | CH3OH | C−O stretch |
| 800 | 12.5 | H2O | libration |
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