Sub- and Supersonic Heat Motion Induced by Femtosecond Laser Pulses

TL;DR

This paper investigates how femtosecond laser pulses create superheating in electron plasma, leading to the generation of thermal shock waves in hot electron environments with energies exceeding 5MeV.

Contribution

It introduces a model based on the Heaviside thermal equation to describe superhot electron generation and shock wave formation in femtosecond laser-induced plasma.

Findings

Superheating of electron plasma occurs with femtosecond laser pulses.

Thermal shock waves are generated in hot electron plasma (>5MeV).

The Heaviside thermal equation effectively describes these phenomena.

Abstract

In this paper the superheating of electron plasma by femtosecond laser pulses is investigated. With Heaviside thermal equation (Lasers in Engineering, 12, (2002), p.17) the generation of superhot electrons is described. It is shown that in hot electron plasma (i.e. with electron energies >5MeV) the thermal shock waves can be generated. Key words: Femtosecond laser pulses; Hot electron plasma; Shock thermal waves.