Answer to Question #139493 in Field Theory for Viccy

Question

Explain how to write spectroscopic term.

Answer 1

Solution

In atomic and molecular physics Spectroscopic term is written as below

$^{2s+1}L_J$

Where 2s+1 is called multiplicity and s is spin.

L is orbital Quantum Number.

For example - s orbit has L=0 etc

$J=\vert{l+s}\vert$ to $\vert{l-s}\vert$