Hydrogen boron fusion in confined geometries

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F10974938%3A_____%2F25%3A25_87_08" target="_blank" >RIV/10974938:_____/25:25_87_08 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/25:10508423

Result on the web

<a href="https://doi.org/10.1017/hpl.2025.10055" target="_blank" >https://doi.org/10.1017/hpl.2025.10055</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/hpl.2025.10055" target="_blank" >10.1017/hpl.2025.10055</a>

Result language

angličtina

Original language name

Hydrogen boron fusion in confined geometries

Original language description

High-energy, short-pulse laser-driven proton–boron (p–11B) fusion has attracted growing interest due to its aneutronic character and potential for clean energy generation. In this study, we report on two experimental campaigns carried out at the LFEX laser facility using petawatt-class laser systems (energy ∼ 1.2–1.4 kJ, pulse duration 2.7 ps, peak intensity ∼ (2–3) × 1019 W/cm2). The experiments explored the influence of complex target geometries – including spherical, cylindrical and wedge-shaped configurations – on α-particle yield. Our results demonstrate that spherical targets can enhance α-particle production by up to two orders of magnitude compared to planar targets of identical composition and also lead to a noticeable shift of the α-particle energy spectrum toward higher values. Furthermore, we implemented a novel diagnostic technique for unambiguous α-particle detection using a CR-39 detector integrated into a Thomson parabola spectrometer. Particle-in-cell simulations performed with the Smilei code provide additional insight into the role of self-generated magnetic fields in modulating particle dynamics. These simulations highlight the critical interplay among target geometry, confinement effects and fusion efficiency. Overall, our findings underscore the potential of optimized target designs to significantly enhance fusion yield and α-particle output in p–11B fusion, with promising implications for the development of laser-driven α-particle sources and advanced clean energy concepts.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

<a href="/en/project/GA24-11398S" target="_blank" >GA24-11398S: Plasma-assisted synthesis of hybrid nanomaterials for laser-driven proton-boron nuclear fusion</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

High Power Laser Science and Engineering

ISSN

2095-4719

e-ISSN

2052-3289

Volume of the periodical

13

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

e72 (1-14)

UT code for WoS article

001608947800001

EID of the result in the Scopus database

2-s2.0-105011142794