A methodology for the discrimination of alpha particles from other ions in laser-driven proton-boron reactions using CR-39 detectors coupled in a Thomson parabola spectrometer

0571625 - FZÚ 2024 RIV GB eng J - Journal Article
Kantarelou, V. - Velyhan, A. - Tchórz, P. - Rosinski, M. - Petringa, G. - Cirrone, G. A. P. - Istokskaia, V. - Krása, Josef - Krůs, Miroslav - Picciotto, A. - Margarone, D. - Giuffrida, L.
A methodology for the discrimination of alpha particles from other ions in laser-driven proton-boron reactions using CR-39 detectors coupled in a Thomson parabola spectrometer.
Laser and Particle Beams. Roč. 2023, Feb. (2023), č. článku 3125787. ISSN 0263-0346. E-ISSN 1469-803X
R&D Projects: GA MŠMT LQ1606
EU Projects: European Commission(XE) 654148 - LASERLAB-EUROPE; European Commission(XE) 871161 - IMPULSE; European Commission(BE) 101052200
Institutional support: RVO:68378271 ; RVO:61389021
Keywords : laser-driven proton-boron reactions * PALS laser facility * CR-39detector * Thomson parabola spectrometer
OECD category: Fluids and plasma physics (including surface physics); Fluids and plasma physics (including surface physics) (UFP-V)
Impact factor: 0.9, year: 2022
Method of publishing: Open access

Solid-state nuclear track detectors (CR-39 type) are frequently used for the detection of ions accelerated by laser-plasma interaction because they are sensitive to each single particle. To the present day, CR-39 detectors are the main diagnostics in experiments focused on laser-driven proton-boron (p11B) fusion reactions to detect alpha particles, which are the main products of such a nuclear reaction, and to reconstruct their energy distribution. However, the acceleration of multispecies ions in the laser-generated plasma makes this spectroscopic method complex and often does not allow to unambiguously discriminate the alpha particles generated from p11B fusion events from the laser-driven ions. In this experimental work, performed at the PALS laser facility (600 J, 300 ps, laser intensity 1016W/cm2), CR-39 detectors were used as main detectors for the angular distribution of the produced alpha particles during a p11B fusion dedicated experimental campaign. Additionally, a CR-39 detector was set inside a Tomson Parabola (TP) spectrometer with the aim to calibrate the CR-39 response for low energetic laser-driven ions originating from the plasma in the given experimental conditions. Te detected ion energies were ranging from hundreds of keV to a few MeV, and the ion track diameters were measured for etching times up to 9 hours. Te goal of the test was the evaluation of the detectors’ ability to discriminate the alpha particles from the aforementioned ions. Within this study, the calibration curves for protons and silicon low energy ions are accomplished, the overlapping of the proton tracks and alpha particles is verifed, and a methodology to avoid this problem is realized.
Permanent Link: https://hdl.handle.net/11104/0346589