Atomic Physics And Basic Quantum Theory

Theory of Atom and Quantum Theory

What you'll learn

Bohr's atomic theory was successful for explanation of occurrence atomic line spectrum and the theory was extremely semi classical theory as given by Bohr.

Heisenberg uncertainty principle was the actual authentication of quantum theory as built up by a few basic postulates regarding normalization, expectation .etc

Schrodinger's quantum mechanics is the platform of probability conservation and is developed by replacing the particle by plane wave function given by Max Born.

The fine structure of atomic spectral line was explained by relativistic Reset model over Sommerfeld's atomic model by relativistic mass variation with velocity

Requirements

All the students in beginning and advance level should require this content.

Description

In this content, we first discuss Bohr's semi-classical theory of atomic structure with correction for finite nuclear mass. After that, the theory was supported by Bohr's corresponding principle. This successful theory of Bohr was then applied in several cases as the explanation of atomic line spectrum, the discovery of the neutron, … etc. Lastly, the theory is extended to Sommerfeld's modification for explanation of fine structure of atomic spectra. Along with this discussion of atomic structure, we also studied about the occurrence of magnetic moment of the atom and the effect of external magnetic field on it regarding the splitting of atomic spectral line. In this context, we discuss Normal Zeeman effect for strong field interaction and Paschen Back effect for intermediate field interaction. At the beginning of the discussion of Basic quantum theory, we focus on Heisenberg's uncertainty principle through the detailed discussion of wave particle duality. This principle was also supported by Heisenberg's thought experiment. This uncertainty principle is then applied for an explanation of the non-existence of an electron within a nucleus. After that, the basic postulates of New quantum mechanics are discussed here before the development of Schrodinger's new quantum mechanics or wave mechanics.  This Schrodinger equation was then applied in the equation of continuity in quantum mechanics and for an explanation of the stationary state. Apart from this, the basic idea about commutator bracket, expectation value … etc. are discussed here. Finally, in this content we discuss Compton scattering, quantum theory of black body radiation … etc. The students at the beginner's as well as in advanced level must collect this content to have the knowledge about the basic atomic features and the basic quantum theory

Overview

Section 1: Introduction

Lecture 1 Introduction

Lecture 2 1. Bohr Atom Model with Correction

Lecture 3 2. Bohr's Correspondence Principle

Lecture 4 3. Discovery of Deuteron from Bohr Theory

Lecture 5 4. Orbital Structure in Sommerfeld's Atomic Model

Lecture 6 5. Magnetic moment of Atom

Lecture 7 6. Normal Zeeman Effect

Lecture 8 7. Paschen Back Effect in Atomic Spectral Line

Lecture 9 8. Doublet Splitting of Sodium D line

Lecture 10 9. Compton Effect

Lecture 11 10. Wave Particle Duality

Lecture 12 11. Heisenberg's Uncertainty from Wave Particle Duality

Lecture 13 12. Heisenberg's Thought Experiment

Lecture 14 13. Non Existence of Electron within Nucleus

Lecture 15 14. Uncertainty Principle to Double Slit Experiment

Lecture 16 15. 1st and 2nd Postulates in Quantum Mechanics

Lecture 17 16. 3rd Postulate(Expansion Postulate) in Quantum Mechanics

Lecture 18 17. Schrodinger's Equation

Lecture 19 18. Equation of Continuity in Quantum Mechanics

Lecture 20 19. Stationary State in Quantum Mechanics

Lecture 21 20. Commotator Bracket

Lecture 22 21. Hermitian Operator

Lecture 23 22. Expectation Value of Quantum Operator

Lecture 24 23. Plank's Theory of Black Body Radiation

Students at all level should accept this.