High efficiency of laser energy conversion with cavity pressure acceleration

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/61389021:_____/25:00648066 RIV/68407700:21230/25:00384126 RIV/68407700:21340/25:00384126 RIV/00216208:11320/25:10501231

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

High efficiency of laser energy conversion with cavity pressure acceleration

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

High efficiency of laser energy conversion with cavity pressure acceleration

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Scientific Reports

ISSN

2045-2322

e-ISSN

2045-2322

Svazek periodika

15

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

21863

Kód UT WoS článku

001522988300004

EID výsledku v databázi Scopus

2-s2.0-105009551072