6 papers
Runaway electron induced explosions of graphite; modeling versus controlled DIII-D experiments
T. Rizzi, A. Kavroulakis, S. Ratynskaia +10
The state-of-the-art concerning the modeling of the thermomechanical response of graphite to runaway electron (RE) impact is based on one-way coupled linear thermoelasticity combin…
Thermomechanical investigation of silicon wafer dynamics within the melting regime driven by picosecond laser pulses for surface structuring
Helen Papadaki, Inam Mirza, Nadezhda M. Bulgakova +2
Laser-induced periodic surface structures (LIPSS) on silicon, generated by ultrashort pulsed lasers, provide an efficient means to tailor surface functionality. This work presents…
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…
Coherence effects in LIPSS formation on silicon wafers upon picosecond laser pulse irradiations
Inam Mirza, Juraj Sládek, Yoann Levy +7
Using different laser irradiation patterns to modify of silicon surface, it has been demonstrated that, at rather small overlapping between irradiation spots, highly regular laser-…
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…