Skip to main content

Frequency Dependence of Relative Intensities and Depolarization Ratio for Resonance Raman Scattering

Buy Article:

$29.00 plus tax (Refund Policy)


Theoretical expressions for the frequency dependence of the intensities of Raman lines in the pre-resonance and rigorous resonance Raman scattering are derived on the basis of a new approach. In this effort the main contribution to the change in polarizability is obtained from the derivative of electronic transition moment with respect to the vibrational normal coordinates. Therefore, this approach differs from previous approaches which suggested that the main contribution to the Raman intensities (polarizability derivative) comes from the derivative of electronic frequency with respect to the normal coordinate. This new approach leads to excellent agreement between the derived theoretical expressions and several recently reported experimental studies. In this paper the effective absorption frequencies and damping terms are determined from the excitation profile rather than the electronic absorption spectrum. To extend these studies to non-totally symmetric modes by considering the scattering due to nondiagonal polarizability tensor components, we have attempted to derive the depolarization ratios by calculating the contribution to the scattered intensity from the quadrupole and magnetic dipole terms. An anomalous depolarization ratio results from the angular distribution of the magnetic dipole vibration at a certain spectral location.

Keywords: Light scattering; Raman spectroscopy; Resonance Raman effect

Document Type: Research Article


Affiliations: Center of Materials Research and Department of Chemistry, University of Maryland, College Park, Maryland 20742

Publication date: May 1, 1976

More about this publication?

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more
Real Time Web Analytics