- Type
- absorption
- Assignments summary
- Characteristics summary
| Assignment | Symmetry | Mode | Specie(s) | Molecule/Atom | Bond | Multiplicity | Degeneracy | Contribution | Resonance |
|---|---|---|---|---|---|---|---|---|---|
| 3ν4 | deformation | 12CH4 | CH4 | ≥ 12C-1H | unknown |
| Peak position (cm-1) |
Center position (cm-1) |
Width (cm-1) |
Shape | Asymmetry factor | Peak intensity (cm-1) |
Peak intensity relative | Peak strength | Integrated intensity (cm-2) |
Integrated intensity relative | Integrated strength | Temperature (K) |
Pressure (bar) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3897 ± 4 | - | - | asymmetric | 3.39 ± 0.05 | 4.237e-04 | w | 30.0 | |||||
| 3900 ± 10 | - | - | high frequency tail | 2.1 ± 0.4 | w | 90.0 | 0.117 |
- Texture
- crystal
- Temperature
- 30.0 ± 1.0 K
- Formation temperature
- 90.7 K
- Temperature max
- 90.7 K
Temperature
- Method #1
- spectrum measurement
- Overlap
- strongly blended
- Peak
- 3897 ± 4 cm-1 (peak)
- Evaluation
- validated
- Quality
- C
- Shape
- asymmetric
- Evaluation
- undefined
- Quality
- undefined
- Method
- peak intensity
- Absorption coefficient
- 3.39 ± 0.05 cm-1
- Relative intensity
- 4.237e-04 ± 6.25e-06
- Strength
- weak (w)
- Evaluation
- validated
- Quality
- A
- Texture
- crystal
- Temperature
- 90.0 ± 1.0 K
- Formation temperature
- 90.7 K
- Temperature max
- 90.7 K
Temperature
- Pressure
- 0.117 bar
- Comments
- Vapor pressure
Pressure
- Method #1
- spectrum measurement
- Overlap
- shoulder-tail
- Peak
- 3900 ± 10 cm-1 (other)
- Evaluation
- validated
- Quality
- D
- Shape
- high frequency tail
- Evaluation
- undefined
- Quality
- undefined
- Comments
- in the wing of the 3847 cm-1 band
- Method
- extrapolated
- Absorption coefficient
- 2.1 ± 0.4 cm-1
- Strength
- weak (w)
- Evaluation
- validated
- Quality
- D
- Publication
- SSHADE spectra
-
- Grundy, Will; Schmitt, Bernard (2001): Vis-NIR absorption coefficient spectrum of CH4 phase-I crystal at 30 K. Version 1. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data.
- Grundy, Will; Schmitt, Bernard (2001): Vis-NIR absorption coefficient spectrum of CH4 phase-I crystal at 90 K. Version 1. SSHADE/GhoSST (OSUG Data Center). Dataset/Spectral Data.