Magnetic-field-dependent angular distributions and linear polarizations of emissions from the $2p^53s~^3P_2$ state in Ne-like ions

TL;DR

This paper investigates how external magnetic fields influence the angular distributions and linear polarizations of emissions from specific excited states in Ne-like ions, demonstrating potential for plasma magnetic field diagnostics.

Contribution

It reveals the magnetic field's effect on emission properties by showing how a B-dependent E1 decay channel competes with M2 transitions, offering a new diagnostic tool.

Findings

Magnetic fields alter emission angular distributions and polarization degrees.

B-dependent E1 decay channel competes with M2 transition.

Potential application in plasma magnetic field diagnostics.

Abstract

We studied the effect of an external magnetic field on the angular distributions and the linear polarizations of emissions from the $2s^22p^53s~^3P^o_2$ state in Ne-like ions. Since a B-dependent E1 decay channel is opened by the magnetic field and competes with the inherent M2 transition, the angular distributions and the linear polarizations strongly depend on the magnetic field strength (B). As an example, we illustrated the effect in Ne-like Mg. The B-dependent angular distributions and linear polarization degrees can also be considered as a tool for diagnostics of the magnetic field in plasmas.