Visualizing the melting processes in ultrashort intense laser triggered gold mesh with high energy electron radiography

TL;DR

This paper demonstrates the use of high energy electron radiography (HEER) for time-resolved imaging of laser-induced melting in gold meshes, showcasing its potential for high-resolution dynamic diagnostics in high energy density physics.

Contribution

It introduces the application of HEER for imaging ultrafast melting processes in gold meshes triggered by ultrashort intense lasers, highlighting its capability for dynamic high-resolution imaging.

Findings

Successful time-resolved imaging from picoseconds to microseconds

Observation of melting phenomena in gold meshes under laser irradiation

Validation of HEER as a tool for dynamic high energy density diagnostics

Abstract

High energy electron radiography (HEER) is a promising tool for high energy density physics diagnostics, apart from other tools like X/{\gamma} ray shadowgraphy and high energy proton radiography. Impressive progresses have been made in development and application of HEER in past few years, and proved its potentials for high-resolution imaging of static opaque objects. By taking advantages of short pulse duration and tunable time structure of high energy electron probes, time-resolved imaging measurement of high energy density gold irradiated by ultrashort intense lasers has been performed. Phenomena of different time periods from picosecond to microsecond have been observed, thus proving feasibilities of this technique for imaging of static and dynamic objects.