Electron-Positron Pair Production by an Electron in a Magnetic Field Near the Process Threshold

TL;DR

This paper investigates electron-positron pair production by an electron in a strong magnetic field near the threshold, highlighting the influence of electron spin orientation on process probability and providing quantitative estimates.

Contribution

It presents a detailed analysis of pair production probability near the threshold, emphasizing the role of electron spin orientation in strong magnetic fields.

Findings

Process probability is significantly higher when electron spin aligns with the magnetic field.

Probability reaches approximately 10^{13} s^{-1} at a magnetic field of 4×10^{12} G.

Spin orientation affects the likelihood of pair production in strong magnetic fields.

Abstract

The electron-positron pair production by an electron in a strong magnetic field near the process threshold is considered. The process is shown to be more probable if the spin of the initial electron is oriented along the field. In this case, the probability of the process is $\sim10^{13} s^{-1}$ when the magnetic field strength is $H=4\cdot 10^{12}$ G.