Time and space resolved Ultra-strong Magnetic-field probing from Relativistic laser-plasma Interaction in ultrathin targets at ELI-Beamlines
Abstract
The project aims to create and study high-intensity, relativistic laser plasma interactions using a sub-micrometer thick liquid target and the unique features of the high repetition-rate L1-ALLEGRA laser at the ELI Beamlines facility in the Czech Republic. Self-generated electric and magnetic fields in laser-generated plasma will give rise to kinetic plasma instabilities. Such instabilities, in turn, result in strong magnetic fields which, based on recent experiments conducted at Ohio State University (OSU) and other laboratories worldwide, can be sustained for many picoseconds after the laser-target interaction. The structure, strength, coupling, and time evolution of these magnetic fields need to be investigated and understood since they play a major role in guiding hot electrons and subsequent ion acceleration. Furthermore, understanding magnetic field generation mechanisms in a high-energy density plasma is also important from an astrophysical perspective. In this proposed joint effort, the ELI Beamlines and OSU teams plan to- (i) directly capture magnetic field dynamics in relativistic laser plasma interactions within ultrathin (sub-micrometer) targets to enable a more comprehensive picture of hot electron and ion generation dynamics; (ii) conduct kHz repetition rate experiments to gather a tremendous amount of data, where machine learning techniques can be used to mine low event probability or low signal-to-noise signatures of interesting effects which have not been possible to detect before; (iii) generate different laser modes on target to change the nature of the relativistic laser plasma interaction, creating topologically non-simple expansion shapes and capturing the resultant magnetic fields. This will allow benchmarking of numerical codes and potentially help connect with astrophysical phenomena where magnetic fields in plasma play a profound creation role.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2025
- Source ID
- FA86552517463
Entities
People
- Daniele Margarone
Organizations
- Air Force Office of Scientific Research
- Extreme Light Infrastructure
- United States Air Force