Plasma polymers as targets for laser-driven proton-boron fusion
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F23%3A00575034" target="_blank" >RIV/61389005:_____/23:00575034 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/23:00575034 RIV/68407700:21340/23:00367459 RIV/CZ______:_____/23:N0000073 RIV/00216208:11320/23:10473995 RIV/44555601:13440/23:43899303
Result on the web
<a href="https://doi.org/10.3389/fphy.2023.1227140" target="_blank" >https://doi.org/10.3389/fphy.2023.1227140</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3389/fphy.2023.1227140" target="_blank" >10.3389/fphy.2023.1227140</a>
Alternative languages
Result language
angličtina
Original language name
Plasma polymers as targets for laser-driven proton-boron fusion
Original language description
Laser-driven proton-boron (pB) fusion has been gaining significant interest for energetic alpha particles production because of its neutron-less nature. This approach requires the use of B- and H-rich materials as targets, and common practice is the use of BN and conventional polymers. In this work, we chose plasma-assisted vapour phase deposition to prepare films of oligoethylenes (plasma polymers) on Boron Nitride BN substrates as an advanced alternative. The r.f. power delivered to the plasma was varied between 0 and 50 W to produce coatings with different crosslink density and hydrogen content, while maintaining the constant thickness of 1 mu m. The chemical composition, including the hydrogen concentration, was investigated using XPS and RBS/ERDA, whereas the surface topography was analyzed using SEM and AFM. We triggered the pB nuclear fusion reaction focusing laser pulses from two different systems (i.e., the TARANIS multi-TW laser at the Queen's University Belfast (United Kingdom) and the PERLA B 10-GW laser system at the HiLASE center in Prague (Czech Republic)) directly onto these targets. We achieved a yield up to 10(8) and 10(4) alpha particles/sr using the TARANIS and PERLA B lasers, respectively. Radiative-hydrodynamic and particle-in-cell PIC simulations were performed to understand the laser-target interaction and retrieve the energy spectra of the protons. The nuclear collisional algorithm implemented in the WarpX PIC code was used to identify the region where pB fusion occurs. Taken together, the results suggest a complex relationship between the hydrogen content, target morphology, and structure of the plasma polymer, which play a crucial role in laser absorption, target expansion, proton acceleration and ultimately nuclear fusion reactions in the plasma.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Frontiers in Physics
ISSN
2296-424X
e-ISSN
2296-424X
Volume of the periodical
11
Issue of the periodical within the volume
JUL
Country of publishing house
CH - SWITZERLAND
Number of pages
11
Pages from-to
1227140
UT code for WoS article
001045493800001
EID of the result in the Scopus database
2-s2.0-85167502858