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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

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

2020

Kód důvěrnosti údajů

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

Název periodika

Physics of Plasmas

ISSN

1070-664X

e-ISSN

—

Svazek periodika

27

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

043107

Kód UT WoS článku

000529426500001

EID výsledku v databázi Scopus

2-s2.0-85084176303