Hydrogen boron fusion in confined geometries

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/00216208:11320/25:10508423

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydrogen boron fusion in confined geometries

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Hydrogen boron fusion in confined geometries

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/GA24-11398S" target="_blank" >GA24-11398S: Plazmatem podpořená syntéza hybridních nanomateriálů pro laserem řízenou proton-borovou jadernou fúzi</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

High Power Laser Science and Engineering

ISSN

2095-4719

e-ISSN

2052-3289

Svazek periodika

13

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

e72 (1-14)

Kód UT WoS článku

001608947800001

EID výsledku v databázi Scopus

2-s2.0-105011142794