Band
Title
9688.0 cm-1: ? of 12CH4 in natural CH4 - phase I
Type
absorption
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
? combination vibration 12CH4 CH4 unknown
Characteristics summary
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)
9688 ± 3 - - asymmetric 0.023 ± 0.001 2.875e-06 vvw 30.0
Label
?
Category
combination vibration

Evaluation

Level
not assigned
Evaluation
undefined
# Multiplicity type Degeneracy Other band
1 unknown

Vibration modes

Label (type)
None (unknown)      
Texture
crystal

Temperature

Temperature
30.0 ± 1.0 K
Formation temperature
90.7 K
Temperature max
90.7 K
Method #1
spectrum measurement
Overlap
strongly blended
Peak
9688 ± 3 cm-1 (other)
Evaluation
undefined
Quality
C
Shape
asymmetric
Evaluation
undefined
Comments
strong shoulder in the wing of the 9734 cm-1 band
Method
extrapolated
Absorption coefficient
0.023 ± 0.001 cm-1
Relative intensity
2.875e-06 ± 1.25e-07
Strength
very very weak (vvw)
Evaluation
undefined
Quality
B