Target normal sheath acceleration by fs laser and advanced carbon foils with gold films and nanoparticles

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F20%3A00524444" target="_blank" >RIV/61389005:_____/20:00524444 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1063/5.0004834" target="_blank" >https://doi.org/10.1063/5.0004834</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0004834" target="_blank" >10.1063/5.0004834</a>

Result language
angličtina
Original language name
Target normal sheath acceleration by fs laser and advanced carbon foils with gold films and nanoparticles
Original language description
Thin foils of graphene oxide (GO) are irradiated by a fs titanium sapphire laser at an intensity of about 10(19) W/cm(2) in high vacuum. The produced plasma in the forward direction accelerates ions in a regime of target-normal-sheath-acceleration, thanks to the relativistic electron emission from the target surface and to their emission from the rear foil surface, generating a high electric field pulse with the positive target. The ion acceleration is measured mainly using SiC detectors in the time-of-flight configuration. Adding gold as nanoparticles or as a thin coverage film, the ion acceleration is enhanced as a result of a higher plasma electron density. The optimal acceleration is reached by varying the GO thickness, the Au nanoparticle concentration, the thin Au film thickness, and the irradiation conditions. Particularly important is the laser focal position with respect to the target surface, which is responsible for different acceleration values. In the used experimental conditions, a maximum proton energy of 2.6MeV was obtained and the best modality to add Au atoms to the target is discussed.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
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
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)