Madurai Kamaraj University - B.Sc., Physics Syllabus

Atomic and Nuclear Physics UNIT - III Lecture notes

Unit - III: RADIOACTIVITY: Discovery of radioactivity – natural radio activity – properties of alpha rays, beta rays and gamma rays – GeigerNuttal law – alpha particle spectra –Gammow's theory of alpha decay (qualitative study) – beta ray spectra – neutrino theory of beta decay – nuclear isomerism – internal conversion – nonconservation of parity in weak interactions.

Atomic and Nuclear Physics UNIT - II Lecture notes

Unit - II: ATOMIC SPECTRA: Origin of atomic spectra – excitation and ionization potentials – Davis and Goucher's method – spectral terms and notations – fine structure of sodium D-lines – Zeeman effect – Larmor's theorem – quantum mechanical explanation of normal Zeeman effect – anomalous Zeeman effect (qualitative explanation) –Paschen-Back effect – Stark effect.

Atomic and Nuclear Physics UNIT - I Lecture notes

UNIT - I: VECTOR ATOM MODEL: Introduction to atom model – vector atom model – electron spin –spatial quantisation– quantum numbers associated with vector atom model – L-S and J-J coupling – Pauli's exclusion principle – magnetic dipole moment due to orbital motion and spin motion of the electron – Bohr magnetron – Stern-Gerlach experiment – selection rules – intensity rule.