Electroproduction of electron-positron pair in oriented crystal at high energy

TL;DR

This paper investigates high-energy electron-positron pair production in oriented crystals, revealing a significant enhancement in probability compared to amorphous media due to direct and cascade processes.

Contribution

It introduces a detailed analysis of both direct and cascade mechanisms of pair production in oriented crystals at high energies.

Findings

Enhanced pair production probability in oriented crystals

Spectrum of created positrons and electrons determined

Comparison shows significant increase over amorphous media

Abstract

The process of electroproduction of the electron-positron pair by high energy electron in an oriented single crystal is investigated. Two contributions are considered: the direct (one-step) process via the virtual intermediate photon and the cascade(two-step) process when the electron emits the real photon moving in the field of axis and afterwards the photon converts into the pair. The spectrum of created positron(electron) is found. It is shown that the probability of the process is strongly enhanced comparing with the corresponding amorphous medium.