## L-S Coupling (Russell-Saunders Coupling)

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 (b) orbital-orbital interaction (c)spin-orbit interaction a) Spin-Spin Correlation :   As a result of spin spin … Read moreL-S Coupling (Russell-Saunders Coupling)

## 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 of magnitude :                       √ … Read morej-j Coupling -Atomic Physics

## 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 from the transition  2P1/2 —–> 2S1/2 and. 2P3/2 ——–>2S1/2.             … Read moreZeeman Splitting of D1 and D2 lines

## Explaination of Anomalous Zeeman effect

The explanation of anomalous Zeeman effect is explained by taking the spin the electron. Anomalous Zeeman Effect In the vector model of the atom, the angular momentum L and spin angular momentum vector precess around the total angular momentum J. When the atom is placed in weak magnetic field B along z, the magnetic moment … Read moreExplaination of Anomalous Zeeman effect

## Explaination of Normal Zeeman Effect & Zeeman Shift

The normal Zeeman effect can be explained by Classical electron theory as well as Quantum theory without taking electron spin. Now, let us explain Normal Zeeman effect with the help of mathematical expression. Normal Zeeman Effect Let us explain it by Classical Theory or Lorentz Classical electron Theory. Consider an electron moving in a circular … Read moreExplaination of Normal Zeeman Effect & Zeeman Shift

## Normal and Anomalous Zeeman Effect

Normal and Anomalous 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 magnetic field on atomic spectral lines is called Zeeman effect. Normal and Anomalous Zeeman Effect A single spectral line seen … Read moreNormal and Anomalous Zeeman Effect