Measurement of strong electromagnetic pulses generated from solid targets at sub-ns kJ-class PALS laser facility

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F21%3A00543795" target="_blank" >RIV/61389021:_____/21:00543795 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21230/21:00355370 RIV/68378271:_____/21:00543762

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/1361-6587/ac087f" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6587/ac087f</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6587/ac087f" target="_blank" >10.1088/1361-6587/ac087f</a>

Result language

angličtina

Original language name

Measurement of strong electromagnetic pulses generated from solid targets at sub-ns kJ-class PALS laser facility

Original language description

Measurements had been performed of strong electromagnetic pulses (EMPs) generated as a result of laser-target interaction at the sub-ns kJ-class Prague Asterix Laser System facility. Two conductive Prodyn FD5C D-dot pencil probes were used. Measurements were performed inside the experimental chamber and outside the chamber in a large chamber window 40 cm in diameter in a setup that guaranteed 6 GHz bandwidth. A very good signal-to-noise ratio (17:1) was obtained after some steps were taken to ensure proper EMP shielding of the data collection setup. The EMP signal in the time domain was found to have the form of a sharp initial spike followed by gradually decaying oscillations interspersed with some secondary spikes. The values of the vertical component of the electric field strength were estimated. The highest value recorded in this experiment was 620(-180)(+260) kV m(-1) at a distance of 40 cm from the target. It was observed that plastic targets-particularly the 100s of mu m thick plastic foils-tend to generate stronger EMP fields than Cu and Au targets. A time-frequency analysis was performed for a typical shot, clearly showing some spectral features that appear only sometime after the start of the signal and hence indicate EMP generation from secondary sources. Electrons ejected from the target were recorded with the energies exceeding 1.5 MeV, which indicates that highly energetic processes are triggered as a result of the laser-target interaction.

Czech name

—

Czech description

—

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

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

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

Name of the periodical

Plasma Physics and Controlled Fusion

ISSN

0741-3335

e-ISSN

1361-6587

Volume of the periodical

63

Issue of the periodical within the volume

8

Country of publishing house

GB - UNITED KINGDOM

Number of pages

17

Pages from-to

085015

UT code for WoS article

000667938800001

EID of the result in the Scopus database

2-s2.0-85109904408