Observation of quasi-monoenergetic electrons in the plasma produced by sub-nanosecond laser pulse

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00619850" target="_blank" >RIV/68378271:_____/25:00619850 - isvavai.cz</a>

Alternative codes found

RIV/61389021:_____/25:00648037 RIV/68407700:21230/25:00383455 RIV/68407700:21340/25:00383455 RIV/00216208:11320/25:10501234

Result on the web

<a href="https://hdl.handle.net/11104/0370727" target="_blank" >https://hdl.handle.net/11104/0370727</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0253017" target="_blank" >10.1063/5.0253017</a>

Result language

angličtina

Original language name

Observation of quasi-monoenergetic electrons in the plasma produced by sub-nanosecond laser pulse

Original language description

We experimentally demonstrate the generation of quasi-monoenergetic electron bunch at the end of the electron energy distribution. The experiment was conducted at the Prague Asterix Laser System where iodine laser supplies laser energy up to 600 J at the fundamental wave-length of 1.315 lm with a pulse duration of 350 ps. The thickness of different target materials (Cu, Sn, Ta, Pb) was varied between 10 and 25 lm. The energy spectrum of electrons was measured using an array of electron spectrometers at different angular directions with respect to the laser axis. Three frame femtosecond interferometry driven by a Ti:Sa laser was implemented to scan the changes in electron density during plasma ignition by the iodine laser. The experimental results indicate the generation of well-defined quasi-monoenergetic peaks in the electron energy distribution. The energy range of the measured quasi-monoenergetic peaks lies between 0.6 and 1.5 MeV, however, the energy spread of the distribution varies between 4% and 12%. These features were observed consistently in the electron spectrum and illustrate the quasi-monoenergetic electron beam generation by interaction of a sub-nanosecond laser beam with plasma. In addition, a comparison of electron spectra from spectrometers located in opposite directions relative to the position of the laser focus indicates the splitting of the electron cloud into plasma blocks during the acceleration of hot electrons by Coulomb repulsion. These findings can be applicable in fast electron beam-driven radiation sources, electromagnetic pulse generation, charge particle acceleration, and inertial fusion studies.

Czech name

—

Czech description

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Type

J_imp - 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

2025

Confidentiality

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

Name of the periodical

Physics of Plasmas

ISSN

1070-664X

e-ISSN

1089-7674

Volume of the periodical

32

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

16

Pages from-to

052702

UT code for WoS article

001483039700004

EID of the result in the Scopus database

2-s2.0-105005010038