# Approximate Selection Rule for Orbital Angular Momentum in Atomic Radiative Transitions

## TL;DR

This paper shows that in atomic radiative transitions, the selection rule l = - 1 dominates across most quantum numbers, except when the orbital angular momentum is much smaller than the principal quantum number.

## Contribution

It introduces an approximate selection rule for orbital angular momentum change in atomic radiative transitions, highlighting its dominance in most cases.

## Key findings

- Transitions with l = - 1 dominate for large n and l
- The rule is less applicable when l  n is very small
- Provides a simplified understanding of atomic radiative transition patterns

## Abstract

We demonstrate that radiative transitions with \Delta l = - 1 are strongly dominating for all values of n and l, except small region where l << n.