5 papers
Optimization of the characteristics of a relativistic electron beam based on laser wake-field acceleration using a non-symmetric gas target profile
D. Mancelli, G. Andrianaki, I. Tazes +8
We demonstrate a high-energy, high-charge, electron source produced by the irradiation of a novel gaseous target by an ultra-intense femtosecond laser pulse. By exploiting a nonsym…
Precise control of high-frequency ultrasounds in thin crystals for the development of tunable narrowband and directional gamma-ray sources
Emmanouil Kaniolakis-Kaloudis, Nektarios Papadogiannis, Yannis Orphanos +2
This work presents a complete methodology for the precise characterization of the acoustic field inside crystal-based devices driven by high-frequency ultrasounds towards the gener…
Efficient ultrafast photoacoustic transduction on Tantalum thin films
Konstantinos Kaleris, Emmanouel Kaniolakis-Kaloudis, Evaggelos Kaselouris +8
Nano-acoustic strain generation in thin metallic films via ultrafast laser excitation is widely used in material science, imaging and medical applications. Recently, it was shown t…
Laser-driven ion acceleration in long-lived optically shaped gaseous targets enhanced by magnetic vortices
I. Tazes, S. Passalidis, G. Andrianaki +11
This research demonstrates high-repetition-rate laser-accelerated ion beams via dual, intersecting, counterpropagating laser-driven blast waves to precisely shape underdense gas in…
Narrowband gamma-ray radiation generation by acoustically driven crystalline undulators
Konstantinos Kaleris, Evaggelos Kaselouris, Vasilios Dimitriou +7
In this paper we present a novel scheme for the controlled generation of of tunable narrowband gamma-ray radiation by ultra-relativistic positron beams inside acoustically driven p…