# X-ray emission from a liquid curtain jet when irradiated by femtosecond laser pulses

## TL;DR

This paper investigates X-ray emission from a liquid curtain jet irradiated by femtosecond laser pulses, demonstrating a stable, clean, and efficient alternative to solid targets for laser-based X-ray sources.

## Contribution

It introduces a liquid jet target for X-ray generation, showing comparable efficiency and improved stability over traditional solid targets.

## Key findings

- X-ray yield from liquid jets is comparable to solid targets.
- Liquid jets provide a cleaner and more stable surface for laser irradiation.
- Using two delayed pulses affects the X-ray emission efficiency.

## Abstract

Laser-based sources of ionizing radiation have attracted a considerable attention in the last years for their broad potential applications. However the stability and robustness of such sources is still an issue that needs to be addressed. Aiming to solve such problems, we propose a source that uses a liquid jet -rather than a solid- as a target for the production of X-rays. Liquid jets offer always a clean surface for every laser shot which represent a clear advantage over solids. In this work, we present an experimental characterization of the X-ray emission of such targets, and study the efficiency of the process when two temporally delayed pulses are used. According to the obtained results, the X-ray yield is comparable with commonly used targets.