The L-S coupling is also known as ‘Russel-Saunders’ coupling after the two astronomers who first used it in studying atomic spectra emitted by stars. In atoms which obey this coupling we introduce the various perturbations in the order : (a) spin-spin correlation Read More …

# Category: Atomic Physics

## j-j Coupling -Atomic Physics

J-J Coupling is obtained in two ways : a) As a result of the stronger spin-orbit interaction, the orbital and the spin angular momentum vectors of each individual electron are strongly coupled together to form a resultant angular monnentuin vector Read More …

## Zeeman Splitting of D1 and D2 lines

Hello friends, welcome to Fullonstudy. Today we are going to discuss another important post i.e. Zeeman splitting of D1 & D2 lines. Let us consider the Zeeman splitting of resonance lines D1 & D2 of sodium lines. These lines arises Read More …

## Expalaination of Anamolous Zeeman effect

The explanation of anamolous Zeeman effect is explained by taking spin of electron. In the vector model of atom, the angular momentum L and spin angular momentum vector precess around the total angular momentum J. When the atom is placed Read More …

## Expalaination of Normal Zeeman Effect & Zeeman Shift

The noramal Zeeman effect can be explained by Classical electron theory as well as Quantum theory without taking electron spin. Now, let us explain Noraml Zeeman effect with the help of mathematical expression. Let us explain it by Classical Theory Read More …

## Noramal & Anamolous Zeeman Effect

Zeeman observed that when an atom (or light source) is placed in an external magnetic field , the atomic spectral lines it emits are splits into several polarised components. This effect of of magnetic field on atomic spectral lines is called Read More …

## Vector Model of Atom; Coupling of Orbital & Spin Angular Momentum

Hello friends welcome once again on our blog.. today I’m going to explain Sommerfeld Extension of Bohr’s Theory which is also an important topic of Atomic Physics. So let us start…. The total angular momentum of an atom results from Read More …

## Sommerfeld Extension of Bohr’s Theory

Hello friends welcome once again on our blog.. today I’m going to explain Sommerfeld Extension of Bohr’s Theory ,which is also an important topic of Atomic Physics. So let us start…. According to Bohr’s theory, an atom has discrete energy Read More …

## Fine Structure of Alkali Spectra & it’s Explanation

Hello friends welcome once again on our blog.. today I’m going to explain Fine Structure of Alkali Spectra which is also an important topic of Atomic Physics. So let us start…. When the spectral lines of alkali atom are seen Read More …

## Electron Spin -Atomic Physics

Guys I hope you like my previous Post i.e. Space Quantisation of an Atom & today I am going to discuss another important topic Electron spin. Without wasting your time let us start… The Bohr’s-Sommerfeld quantum theory of elliptical orbit with relativistic Read More …