High-current stream of energetic alpha particles from laser-driven proton-boron fusion

0525146 - FZÚ 2021 RIV US eng J - Článek v odborném periodiku
Giuffrida, Lorenzo - Belloni, F. - Margarone, Daniele - Petringa, G. - Milluzzo, G. - Scuderi, Valentina - Velyhan, Andriy - Rosinski, M. - Picciotto, A. - Kucharik, M. - Dostál, Jan - Dudžák, Roman - Krása, Josef - Istokskaia, Valeria - Catalano, R. - Tudisco, S. - Verona, C. - Jungwirth, Karel - Bellutti, P. - Korn, Georg - Cirrone, Giuseppe A.P.
High-current stream of energetic alpha particles from laser-driven proton-boron fusion.
Physical Review E. Roč. 101, č. 1 (2020), s. 1-13, č. článku 013204. ISSN 2470-0045. E-ISSN 2470-0053
Grant CEP: GA ČR(CZ) GA15-02964S; GA MŠMT EF16_019/0000789; GA MŠMT LQ1606
GRANT EU: European Commission(XE) 654148 - LASERLAB-EUROPE
Grant ostatní: OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789
Institucionální podpora: RVO:68378271
Klíčová slova: proton-boron fusion reaction * boron nitride target * subnanosecond laser system * α particles generation
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 2.529, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1103/PhysRevE.101.013204

The nuclear reaction known as proton-boron fusion has been triggered by a subnanosecond laser system focused onto a thick boron nitride target at modest laser intensity (∼10to16 W/cm2), resulting in a record yield of generated α particles. The estimated value of α particles emitted per laser pulse is around 10to11, thus orders of magnitude higher than any other experimental result previously reported. The accelerated α particle stream shows unique features in terms of kinetic energy (up to 10 MeV), pulse duration (∼10 ns), and peak current (∼2 A) at 1 m from the source, promising potential applications of such neutronless nuclear fusion reactions. We have used a beam-driven fusion scheme to explain the total number of α particles generated in the nuclear reaction.
Trvalý link: http://hdl.handle.net/11104/0309353