Hot electron emission characteristics from thin metal foil targets irradiated by terawatt laser

0586825 - FZÚ 2025 RIV GB eng J - Journal Article
Singh, Sushil K. - Krupka, Michal - Krása, J. - Istokskaia, V. - Dostál, Jan - Dudžák, Roman - Pisarczyk, T. - Cikhardt, J. - Agarwal, Shubham - Klír, D. - Řezáč, K. - Giuffrida, L. - Chodukowski, T. - Rusiniak, Z. - Burian, Tomáš - Margarone, D. - Krůs, M. - Juha, Libor
Hot electron emission characteristics from thin metal foil targets irradiated by terawatt laser.
Laser and Particle Beams. Roč. 42, Apr (2024), č. článku e2. ISSN 0263-0346. E-ISSN 1469-803X
R&D Projects: GA MŠMT(CZ) LM2023068
EU Projects: European Commission(XE) 871124 - LASERLAB-EUROPE
Institutional support: RVO:68378271
Keywords : electron temperature scaling * hot electron generation * inertial fusion * laser-foil interaction * multi-channel electron spectrometers * plasma physics
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 0.9, year: 2022
Method of publishing: Open access

The interaction of focused high power laser beam with solid targets leads to acceleration of charged particles among other by non-linear effects in the plasma. In this experiment, the hot electrons are characterized from the interaction of sub-nanosecond and kilo-joule class laser pulse with thin metal foil targets (Cu, Ta, Ti, Sn, Pb). The energy istribution functions of electrons were measured by angularly resolved multichannel electron spectrometer. The hot electron temperatures were observed in range from 30 to 80 keV for laser intensities between ∼1015 and 3 × 1016 W cm−2. The measured energy distribution and electron temperature were compared with published results and known scaling laws at higher laser intensities. For foil targets of different materials, the temperature and flux of hot electrons were scaled with target thickness in the range of 1–100 μm from low Z to high Z materials where Z is the atomic number.
Permanent Link: https://hdl.handle.net/11104/0354236