Details of CH4219 (Spring 2023)
| Level: 4 | Type: Theory | Credits: 4.0 |
| Course Code | Course Name | Instructor(s) |
|---|---|---|
| CH4219 | Principles of Spectroscopy | Mousumi Das, Sangita Sen |
| Preamble |
|---|
| The course will be devoted to teach the fundamental principles of various spectroscopic methods. Students will get a vivid knowledge on the basics of spectroscopy and some applications. |
| Syllabus |
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| Introduction to spectroscopy 5 Lectures
The Electromagnetic Spectrum, Interaction of Radiation with Matter, Blackbody Radiation, Einstein A and B Coefficients, Absorption and Emission of Radiation, Derivation of Beer's Law, Lineshape Functions, Different types of broadening (Natural Lifetime Broadening, Pressure Broadening, Doppler Broadening, Transit-Time Broadening, Power Broadening etc.). Atomic Spectroscopy 5 Lectures Angular Momentum, The Hydrogen Atom and One-Electron Spectra, Vector Model ,Spin-Orbit Coupling, Many-Electron Atoms, Selection Rules, Atomic Spectra, Hyperfine Structure, Intensity of Atomic Lines, Zeeman Effect, Paschen-Back Effect, Stark Effect. Rotational Spectroscopy 7 Lectures Rotation of Rigid Bodies, Diatomic and Linear Molecules, Selection Rules, Centrifugal Distortion, Vibrational Angular Momentum, Line Intensities for Diatomic and Linear Molecules, Symmetric Tops, Molecule and Space-Fixed Angular Momenta, Rotational Spectra, Centrifugal Distortion, Line Intensity and selection rules Asymmetric Tops etc. Vibrational Spectroscopy 7 Lectures Wavefunctions for Harmonic and Anharmonic Oscillators, Vibrational Selection Rules for Diatomics, Dissociation Energies from Spectroscopic Data, Vibration-Rotation Transitions of Diatomics, Combination Differences, Vibrational Motion of Polyatomic Molecules, Internal Coordinates, Symmetry Coordinates, Symmetry of Normal Modes, Selection Rules for Vibrational Transitions, Vibration-Rotation Transitions of Linear Molecules, Nuclear Spin Statistics, Excited Vibrational States of Linear Molecules, Vibrational Spectra of Symmetric Tops, Coriolis Interactions in Molecules, Infrared Transitions of Spherical Tops, Vibrational Spectra of Asymmetric Tops, Vibration-Rotation Line Intensities, Fermi and Coriolis Perturbations, Inversion Doubling and Fluxional Behaviour. Electronic Spectroscopy 7 Lectures Orbitals and States, Vibrational Structure and Rotational Structure of Diatomic Molecules, Singlet-Singlet Transitions, Nonsinglet Transitions, The Symmetry of Diatomic Energy Levels: Parity, Total (+/-) Parity, Rotationless (e/f) Parity, Gerade/Ungerade (g/u) Parity, Symmetric/Antisymmetric (s/a) Parity etc. Dissociation, Photodissociation, and Predissociation, electronic spectroscopy of polyatomics, Calculation of absorption energies, Jablonskii diagram, Proton transfer, electron transfer in polyatomic aromatic molecules. Light Scattering and the Raman Effect 4 Lectures Classical Model, Quantum Model, Polarization, Rotational Raman Effect, Vibration-Rotation Raman Spectroscopy, Rayleigh and Raman Intensities, advanced Raman techniques. Photoelectron Spectroscopy 2 lectures Brief description of ultraviolet photoelectron spectroscopy (UPS), and x-ray photoelectron spectroscopy (XPS), application to chemistry. |
| References |
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| References
(1) Spectra of Atoms and Molecules, Peter F. Bernath, Oxford University Press, Oxford, 1995. (2) Physical Chemistry, Peter Atkins & Julio De Paula, 8th Ed., W. H. Freeman and Company, New York, 2010. (3) Physical Chemistry, Thomas Engel & Philip Reid, 3rd Ed., Pearson, Edinburgh, 2010. |
Course Credit Options
| Sl. No. | Programme | Semester No | Course Choice |
|---|---|---|---|
| 1 | IP | 2 | Not Allowed |
| 2 | IP | 4 | Elective |
| 3 | IP | 6 | Not Allowed |
| 4 | MP | 2 | Core |
| 5 | MP | 4 | Not Allowed |
| 6 | MR | 2 | Not Allowed |
| 7 | MR | 4 | Not Allowed |
| 8 | MS | 10 | Not Allowed |
| 9 | MS | 4 | Not Allowed |
| 10 | MS | 6 | Not Allowed |
| 11 | MS | 8 | Elective |
| 12 | RS | 1 | Not Allowed |
| 13 | RS | 2 | Not Allowed |