Extended characterization of alpha particles via laser-induced p-.sup.11./sup.B fusion reaction in silicon hydrogenated boron-doped thin targets

0574246 - FZÚ 2024 RIV US eng J - Journal Article
Milluzzo, G. - Belloni, F. - Petringa, G. - Scuderi, V. - Giuffrida, L. - Velyhan, A. - Verona, C. - Picciotto, A. - Rosinski, M. - Catalano, R. - Crivellari, M. - Dostál, Jan - Dudžák, Roman - Juha, Libor - Krása, Josef - Krupka, Michal - Krůs, M. - Lanzalone, G. - Leanza, R. - Litrico, C.G. - Pfeifer, Miroslav - Schillaci, F. - Tudisco, S. - Margarone, D. - Cirrone, G. A. P.
Extended characterization of alpha particles via laser-induced p-¹¹B fusion reaction in silicon hydrogenated boron-doped thin targets.
Journal of Instrumentation. Roč. 18, č. 7 (2023), č. článku C07022. ISSN 1748-0221. E-ISSN 1748-0221
R&D Projects: GA MŠMT(CZ) EF18_053/0016627; GA MŠMT(CZ) EF20_079/0017754; GA MŠMT(CZ) LM2018114; GA MŠMT LQ1606
Grant - others:OP VVV - Mobility FZU 2(XE) CZ.02.2.69/0.0/0.0/18_053/0016627; OP VVV - MSCA-IF IV FZU(XE) CZ.02.2.69/0.0/0.0/20_079/0017754
Institutional support: RVO:68378271
Keywords : instrumentation and methods for time-of-flight (TOF) spectroscopy * plasma diagnostics - charged-particle spectroscopy * solid state detectors
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 1.3, year: 2022
Method of publishing: Open access

The nuclear fusion channel of the p-11B reaction producing α particles with multi-MeV kinetic energies was induced by a sub-nanosecond laser pulse focused onto 10 μm thick boron-doped thin targets at intensities of ∼ 1016 W/cm2. A full characterization in terms of α particle flux and angular distribution was performed thanks to the simultaneous use of several diagnostics (time-of-flight detectors, nuclear track detectors, and Thomson Parabola spectrometers), which enabled to measure key features of particles produced both in the backward and forward directions. Maximum α particle flux and cut-off energy were recorded at small detection angles with respect to the target normal in the backward direction. The maximum kinetic energy shown by the α-particles produced in the nuclear fusion reaction was ascribable to a post-accelerating transient electric field present in the laser-generated plasma, in agreement with our previous preliminary results.
Permanent Link: https://hdl.handle.net/11104/0344582