Sep 15 – 21, 2019
Hotel Hermitage, La Biodola Bay, Isola d'Elba, Italy
Europe/Rome timezone

Enhanced proton acceleration from ultra-thin foils with non-periodic nano-holes

Sep 18, 2019, 7:00 PM
Parking Area (Hotel Hermitage)

Parking Area

Hotel Hermitage

poster WG2 - Ion beams from plasmas Cheese and Wine Poster Session 2


Giada Cantono (Lund University)


The interaction of high-power, high-contrast laser pulses with nanostructured targets has largely been explored as a possible way to increase energy absorption and aim to more efficient proton acceleration. In these studies, the costs of target manufacturing and handling are a key factor to establish the soundness of each approach, and while advance of laser technologies now allow preserving the target structures until the interaction with the ultra-intense pulse peak, stringent requirements on target geometries and shapes may hinder their applicability to high repetition rate schemes.

Here we present promising results on the energy enhancement of TNSA-driven proton beams achieved when irradiating sub-µm foils perforated with a non-periodic distribution of nm-size holes. Particle-In-Cell simulations highlight how hot electrons travelling across the nano-holes benefit from a longer interaction with the laser pulse and result in a more efficient sheath field for accelerating the proton beams. The numerical investigation demonstrates the robustness of the mechanisms within a variety of foil thicknesses and hole diameters. Recent experiments performed at the Lund High-Power Laser facility are consistent with the simulation results and confirm the favourable manageability of this target configuration.

Primary author

Giada Cantono (Lund University)


Alexander Permogorov (Lund University) Kristoffer Svendsen (Lund university) Claes-Göran Wahlström (Lund University) Dr Illia Thiele (Chalmers University of Technology) Julien Ferri (Chalmers University of Technology) Dr Evangelos Siminos (University of Gothenburg) Dr Laurent Gremillet (CEA) Mr Alexander Dmitriev (Gothenburg University) Mrs Evgeniya Smetanina (Gothenburg University) Prof. Tünde Fülöp (Chalmers University of Technology)

Presentation materials