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• High Power Laser Science and Engineering
• Vol. 7, Issue 3, 03000e56 (2019)
Fabrizio Bisesto1、†, Mario Galletti2、3, Maria Pia Anania1, Massimo Ferrario1, Riccardo Pompili1, Mordechai Botton4, Elad Schleifer4, and Arie Zigler1、4
Author Affiliations
• 1INFN-LNF, Via Enrico Fermi 40, 00044 Frascati, Italy
• 2Central Laser Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot OX11 0QX, UK
• 3GoLP Instituto de Plasmas e Fusão Nuclear, Instituto Superior Tecnico, Universidade de Lisboa, Av. Rovisco Pais 1049-001 Lisbon, Portugal
• 4Racah Institute of Physics, Hebrew University, 91904 Jerusalem, Israel
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Abstract

Interaction between high-intensity lasers with solid targets is the key process in a wide range of novel laser-based particle accelerator schemes, as well as electromagnetic radiation sources. Common to all the processes is the generation of femtosecond pulses of relativistic electrons emitted from the targets as forerunners of the later-time principal products of the interaction scheme. In this paper, some diagnostics employed in laser–solid matter interaction experiments related to electrons, protons, ions, electromagnetic pulses (EMPs) and X-rays are reviewed. Then, we present our experimental study regarding fast electrons and EMPs utilizing a femtosecond-resolution detector previously adopted only in accelerator facilities.

1 Introduction

The introduction of the chirped pulse amplification (CPA) technique more than thirty years ago[1] has enabled the development of high-intensity, ultra-short laser systems that opened up new horizons for a wide range of experiments involving sub-picosecond light–matter interactions. New research areas, such as astrophysics in the laboratory[2], high-energy-density experiments[3] and novel schemes for particle acceleration[4, 5] are explored in large-scale facilities as well as more modest table-top laboratories. Prominent among other studies is laser-based ion acceleration, mainly due to its possible significant impact on hadron therapy of cancer. A noteworthy scheme is target normal sheath acceleration (TNSA), where the acceleration originates from thin foils irradiated by high-intensity (${>}10^{18}~\text{W}/\text{cm}^{2}$), short-pulse lasers.