High efficiency of laser energy conversion with cavity pressure acceleration

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00637373" target="_blank" >RIV/68378271:_____/25:00637373 - isvavai.cz</a>
Alternative codes found
RIV/61389021:_____/25:00648066 RIV/68407700:21230/25:00384126 RIV/68407700:21340/25:00384126 RIV/00216208:11320/25:10501231
Result on the web
<a href="https://hdl.handle.net/11104/0368896" target="_blank" >https://hdl.handle.net/11104/0368896</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41598-025-01945-9" target="_blank" >10.1038/s41598-025-01945-9</a>

Result language
angličtina
Original language name
High efficiency of laser energy conversion with cavity pressure acceleration
Original language description
Cavity Pressure Acceleration (CPA) is a technique for accelerating dense plasma streams by utilizing laser-generated plasma pressure within a spatially confined region. This approach has been proposed as an alternative to the classical ablative acceleration of plasma. Initially, the primary goal of this approach was to create a dense plasma stream (a theoretical macroparticle delivering energy/momentum) suitable for experiments related to Impact Fast Ignition. In recent experimental sessions, we used targets equipped with cavities lined with deuterated polyethylene (CD2) foils and powder. These targets were irradiated with a 1 PALS sub-kilojoule, low-contrast laser beam (λ=1315 nm), focused to an intensity of 1−2×1016 W/cm2 within a 250−350 ps pulse. The scheme has proven to be highly efficient in converting laser energy into high-energy interaction products, such as high-density plasma streams and protons. We observed neutron yields among the highest achieved to date in Deuterium-Deuterium laser-induced experiments, even when compared to facilities with lasers operating at significantly higher energies and intensities. 1D hydrodynamic code used to simulate plasma parameters in the targets confirmed the high potential of the method, regardless of the driving laser wavelength.
Czech name
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Czech description
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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)

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

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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