arXiv subjects

Federica Baffigi

Publications and source records attributed to Federica Baffigi.

3 recordsLinked to original sources

arXiv2026

Ultrashort Pulse Train Generation on a 100TW Laser Beamline Using a Delay Mask After the Final Focusing Optics

Experimental results aimed at demonstrating the feasibility of a two-section delay mask for the generation of ultrashort pulse trains are reported. Based on the initial simulation results, a 500 um thick circular fused silica plate featuring a central aperture was designed to enable two distinct transverse portions of the incident laser pulse to be focused, ideally, with equal intensity. This fulfills one of the requirements of the resonant multipulse ionization injection (ReMPI) scheme for laser wakefield acceleration. The experiment was carried out at the CNR-INO Intense Laser Irradiation Laboratory using a 240 TW laser system operated at 120 TW, as part of the ongoing preparation for the first experimental demonstration of ReMPI.

physics.plasm-ph↗

arXiv2025

A study of cross-relaxation and temporal dynamics of lasing at 2 microns in Thulium doped ceramic

We report the characterization of the pump absorption and emission dynamic properties of a \tulio{} ceramic lasing medium using a three mirrors folded laser cavity. We measured a slope efficiency of 73\%, which allowed us to retrieve the cross-relaxation coefficient. The behavior of our system was modeled via a set of macroscopic rate equations in both the quasi continuous wave and the pulsed pumping regime. Numerical solutions were obtained, showing a good agreement with the experimental findings. The numerical solution also yielded a cross-relaxation coefficient in very good agreement with the measured one, showing that the cross-relaxation phenomenon approaches the maximum theoretical efficiency.

physics.optics↗

arXiv2025

Radionuclide Production for Dose Verification in VHEE FLASH Radiotherapy

This study explores the production of radionuclides in a PMMA (Polymethylmethacrylate) phantom irradiated with Very High Energy Electrons (VHEE) beams as a novel method for dose verification. In this work, Monte Carlo simulation studies using the Geant4 toolkit and experimental measurements with a VHEE beam produced by a laser-plasma accelerator were conducted. Specifically, the photonuclear production of 11C, 15O and 13N is examined, with a detailed analysis of their spatial distribution, production yields and decay time

physics.med-ph↗