||B. Cagnac and J.C. Pabey-Payroula, Modern Atomic Physics Vol.I and II McMillan, 1975. U. Fano and L. Fano, Physics of atoms and molecules: An introduction to structure of matter, U. of Chicago Press, 1972. A. Bousquet Dunod, Instrumental Spectroscopy, Paris, 1969. D. Bates and I. E
||Energy quantization, momentum of radiation, radiative transition probabilities, line-widths, laser interactions in hydrogen atom, Lamb shift, hydrogen maser. Coupling of angular momenta and multiplet structure in many electron atoms. Atomic magnetism, gyromagnetic effects, angular momentum of radiation and free electrons. Zeeman and Paschen Back effects. Hyperfine and Nuclear quadrupole interactions. X-ray and photoelectron spectra. Electronic, vibrational and rotational spectra of diatomic molecules. Experimental methods in atomic and molecular physics : interference, level-crossing, Fourier transform and radio frequency spectroscopy. Life times and oscillator strengths. Electronic and atom collisions. Basic principles of NMR, NQR, ESR, Mossbauer, Microwave, IR and Raman spectroscopy.