Stable propagation of a modulated positron beam in a bent crystal channel

TL;DR

This paper demonstrates that a modulated positron beam can maintain its modulation deep within a bent crystal channel, paving the way for crystalline undulators to serve as coherent hard x-ray and gamma-ray sources.

Contribution

It shows that beam modulation is preserved in bent crystal channels, enabling new coherent radiation sources in the hard x-ray and gamma-ray spectrum.

Findings

Beam maintains modulation at large depths

Potential for crystalline undulator as x-ray source

Advances in hard x-ray and gamma-ray laser development

Abstract

The propagation of a modulated positron beam in a planar crystal channel is investigated. It is demonstrated that the beam preserves its modulation at sufficiently large penetration depths which opens the prospect of using a crystalline undulator as a coherent source of hard x-rays. This finding is a crucial milestone in developing a new type of lasers radiating in the hard x-ray and gamma-ray range.