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- Depolarization_ratio abstract "In Raman spectroscopy, the depolarization ratio is the intensity ratio between the perpendicular component and the parallel component of the Raman scattered light.Early work in this field was carried out by George Placzek, who developed the theoretical treatment of bond polarizabilityThe Raman scattered light is emitted by the stimulation of the electric field of the incident light. Therefore, the direction of the vibration of the electric field, or polarization direction, of the scattered light might be expected to be the same as that of the incident light. In reality, however, some fraction of the Raman scattered light has a polarization direction that is perpendicular to that of the incident light. This component is called the perpendicular component. Naturally, the component of the Raman scattered light whose polarization direction is parallel to that of the incident light is called the parallel component, and the Raman scattered light consists of the parallel component and the perpendicular component. The ratio between these two components is expressed as the depolarization ratio.The value of the depolarization ratio of a Raman band depends on the symmetry of the molecule and the normal vibrational mode, in other words, the point group of the molecule and its irreducible representation to which the normal mode belongs. Under Placzek’s polarizability approximation, it is known that the depolarization ratio of a totally symmetric vibrational mode is less than 0.75, and that of the other modes equals 0.75. A Raman band whose depolarization ratio is less than 0.75 is called a polarized band, and a band with a 0.75 depolarization ratio is called a depolarized band.The ratio of the peak intensity of the parallel and perpendicular component is known as the depolarization ratio. And can be obtained as shown in equation 1.Equation 1. Raman depolarisation ratio. Where 'Iperpendicular' signifies the peak intensity with excitation and Raman analysis polarisers orientated perpendicular to one another.For example if you have a species with a peak which had an intensity 10 units, when the polarisers were parallel, and an intensity of 1 unit when the polarisers were perpendicular, then the depolarisation ratio would be 1/10 = 0.1, this peak would be highly polarised band.Spectral Images shown here are taken, with permission from PerkinElmer Raman Division.".
- Depolarization_ratio thumbnail Cyclohexane_Polarized_Raman.JPG?width=300.
- Depolarization_ratio wikiPageID "1157370".
- Depolarization_ratio wikiPageRevisionID "595417432".
- Depolarization_ratio hasPhotoCollection Depolarization_ratio.
- Depolarization_ratio subject Category:Ratios.
- Depolarization_ratio subject Category:Spectroscopy.
- Depolarization_ratio type Abstraction100002137.
- Depolarization_ratio type MagnitudeRelation113815152.
- Depolarization_ratio type Ratio113819207.
- Depolarization_ratio type Ratios.
- Depolarization_ratio type Relation100031921.
- Depolarization_ratio comment "In Raman spectroscopy, the depolarization ratio is the intensity ratio between the perpendicular component and the parallel component of the Raman scattered light.Early work in this field was carried out by George Placzek, who developed the theoretical treatment of bond polarizabilityThe Raman scattered light is emitted by the stimulation of the electric field of the incident light.".
- Depolarization_ratio label "Depolarisation (Wellenausbreitung)".
- Depolarization_ratio label "Depolarization ratio".
- Depolarization_ratio sameAs Depolarisation_(Wellenausbreitung).
- Depolarization_ratio sameAs m.04c1tz.
- Depolarization_ratio sameAs Q1191574.
- Depolarization_ratio sameAs Q1191574.
- Depolarization_ratio sameAs Depolarization_ratio.
- Depolarization_ratio wasDerivedFrom Depolarization_ratio?oldid=595417432.
- Depolarization_ratio depiction Cyclohexane_Polarized_Raman.JPG.
- Depolarization_ratio isPrimaryTopicOf Depolarization_ratio.
