Table 2
Comparison of observed DIB wavelengths and equivalent widths with experimental AcridineH+ wavelengths (in nm).
| DIB | Experimental AcH+ | |||
| Wavelength | FWHM/Å | Wavelength | Intensitya | Assignmentb |
|
|
||||
| 442.8831/442.8192/442.8883−5 | 22.51,2/12.33 | 442.24 | 100 | 0 |
| 439.54 | 15 | 1 |
||
| 437.1731/436.3862 | 1.03/0.461,2 | |||
| 434.86 | 170 | 10 |
||
| 433.38 | 30 | |||
| 432.74 | 85 | 3 |
||
| 432.18 | 15 | |||
| 431.42 | 30 | |||
| 431.04 | 130 | 18 |
||
| 430.30 | 55 | |||
| 429.52 | 95 | |||
| 428.9 | 20 | |||
| 428.3 | 65 | |||
| 427.62 | 150 | 10 |
||
| 427.14 | 25 | |||
| 426.22 | 20 | |||
| 425.9012 | 1.051,2 | 425.62 | 55 | |
| 424.32 | 20 | |||
| 423.98 | 110 | 1018 |
||
| 423.28 | 25 | |||
| 423.02 | 50 | |||
| 422.46 | 55 | |||
| 420.56 | 60 | 10 |
||
| 420.24 | 55 | |||
| 418.94 | 25 | |||
| 417.653−5 | 23.33 | 417.62 | 50 | 1018 |
| 417.16 | 35 | |||
| 416.24 | 35 | |||
| 415.46 | 60 | |||
| 414.84 | 65 | |||
| 413.83 | 85 | 1018 |
||
| 413.5 | 45 | |||
| 412.72 | 35 | |||
| 411.08 | 25 | |||
Notes.
The intensity of the vibronic bands relative to the origin band are given (as percentages), but the absolute values should be used for guidance only, as there are possible saturation effects in the experimental method which are not well controlled.
The notation 
corresponds to a transition from the vibrationless level in the ground electronic state, S0, to a level with n quanta of the vibrational mode v in the S1 electronic excited state. At the low temperature of the experiment, only the vibrationless level is populated in the S0 ground state.
Reference. (1) Hobbs et al. (2009); (2) Hobbs et al. (2008); (3) Jenniskens & Desert (1994); (4) Krelowski et al. (1995); (5) Tuairisg et al. (2000).
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