Contaminant-free alpha particles signature from laser-driven proton-boron fusion plasma using Thomson parabola spectrometer
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F10974938%3A_____%2F25%3A25_87_11" target="_blank" >RIV/10974938:_____/25:25_87_11 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1017/lpb.2025.10005" target="_blank" >https://doi.org/10.1017/lpb.2025.10005</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/lpb.2025.10005" target="_blank" >10.1017/lpb.2025.10005</a>
Alternative languages
Result language
angličtina
Original language name
Contaminant-free alpha particles signature from laser-driven proton-boron fusion plasma using Thomson parabola spectrometer
Original language description
Accurate discrimination and energy measurement of alpha particles remain a key challenge in proton boron fusion driven by high-intensity laser-plasma interaction due to the complex mix of ions generated in these extreme conditions. We present a novel implementation of a high-accuracy, low-background technique involving a CR-39 enhanced image plate that was used with a Thomson parabola spectrometer (TPS) and differential filtering. This technique demonstrated a strong reduction in background contamination arising from plasma ions compared to standard CR-39 and allowed for the generation of a contaminant-free alpha particle energy spectrum from a boron foam target irradiated by a 10 J, 800 fs laser pulse with an intensity of $sim$$2times10<^>{19} Wcm<^>{-2}$. The laser pulse was from a hybrid Ti:Sapphire-Nd:glass system generated from the Chirped Pulse Amplification (CPA) mode. The spectrum covered an energy range of 3-8 MeV with a corresponding energy resolution of 0.1-0.5 MeV. The developed filtering technique has the potential to measure even lower energy ranges, further extending its applicability compared with existing methods. The differential filtering solution strongly reduces the signal from carbon ions that would otherwise overlap the alpha particle trace on the TPS, providing a quasi-contaminant-free signal, while the CR-39 enhanced the detection sensitivity compared to other detectors.
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
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
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Continuities
R - Projekt Ramcoveho programu EK
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
LASER AND PARTICLE BEAMS
ISSN
0263-0346
e-ISSN
1469-803X
Volume of the periodical
43
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
e8 (1-12)
UT code for WoS article
001632888900001
EID of the result in the Scopus database
2-s2.0-105024444228