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8 June 2023 Deuteron acceleration and fast neutron generation with few-cycle, relativistic laser pulses at 1 Hz repetition rate (Conference Presentation)
Károly Osvay, Miklós Füle, Tibor Gilinger, Bence Kis, Prashant K. Singh, Sargis Ter-Avetisyan, Parvin Varmazyar, Barna Biró, László Csedreki, Zsolt Dombrádi, Zoltán Elekes, András Fenyvesi, Zsolt Fülöp, Zoltán Halász, Zeren Korkulu, István Kuti, László Stuhl, Adrián Bembibre, Jose Benlliure, Juan Peñas, Ádám Börzsönyi, János Csontos, Arnold Farkas, Árpád Mohácsi, Tamás Somoskoi, Gábor Szabó, Szabolcs Tóth
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Proceedings Volume PC12579, Laser Acceleration of Electrons, Protons, and Ions VII; PC125790O (2023) https://doi.org/10.1117/12.2665620
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic
Abstract
The development of laser plasma accelerators has been centred around the optimisation of particle yield resulting from the interaction of high energy, single-shot lasers with very low average power. Here we aim at the already existing, high average power lasers with kHz repetition rate but low pulse energy. In our experiment, the SEA laser of ELI-ALPS provided ultrahigh contrast laser pulses of 12fs pulse duration and 20mJ energy on the 200 nm thick dPE foils. A rotating wheel target system allowed the laser interaction run at 1 Hz repetition rate in bursts of 75 shots. The accelerated deuterons, measured by Thomson spectrometers for each shot, hit a 0.1mm thick, 20 mm diameter deuterated-polyethylene disk. Neutrons were then generated via d+d fusion reaction with a mean energy of 2.45MeV. The neutron events were detected by four plastic scintillators at various angles around the chamber. From the ToF distributions we have concluded that an average of >3000 neutrons were generated in a shot, with a slight anisotropy to the forward direction. The upcoming development of kHz repetition-rate primary-target systems would boost the yield of neutrons in a second, that may exceed which can be achieved with PW class lasers..
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© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Károly Osvay, Miklós Füle, Tibor Gilinger, Bence Kis, Prashant K. Singh, Sargis Ter-Avetisyan, Parvin Varmazyar, Barna Biró, László Csedreki, Zsolt Dombrádi, Zoltán Elekes, András Fenyvesi, Zsolt Fülöp, Zoltán Halász, Zeren Korkulu, István Kuti, László Stuhl, Adrián Bembibre, Jose Benlliure, Juan Peñas, Ádám Börzsönyi, János Csontos, Arnold Farkas, Árpád Mohácsi, Tamás Somoskoi, Gábor Szabó, and Szabolcs Tóth "Deuteron acceleration and fast neutron generation with few-cycle, relativistic laser pulses at 1 Hz repetition rate (Conference Presentation)", Proc. SPIE PC12579, Laser Acceleration of Electrons, Protons, and Ions VII, PC125790O (8 June 2023); https://doi.org/10.1117/12.2665620
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KEYWORDS
Laser development
Particles
Ions
Laser applications
Laser energy
Laser systems engineering
Plasma
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