High-repetition-rate source of nanosecond duration kA-current pulses driven by relativistic laser pulses

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F24%3A00376420" target="_blank" >RIV/68407700:21230/24:00376420 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1017/hpl.2024.14" target="_blank" >https://doi.org/10.1017/hpl.2024.14</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/hpl.2024.14" target="_blank" >10.1017/hpl.2024.14</a>

Result language
angličtina
Original language name
High-repetition-rate source of nanosecond duration kA-current pulses driven by relativistic laser pulses
Original language description
We report the first high-repetition-rate generation and simultaneous characterization of nanosecond-scale return currents of kA-magnitude issued by the polarization of a target irradiated with a PW-class high-repetition-rate titanium:sapphire laser system at relativistic intensities. We present experimental results obtained with the VEGA-3 laser at intensities from $5times {10}<^>{18}$ to $1.3times {10}<^>{20}$ W cm ${}<^>{-2}$ . A non-invasive inductive return-current monitor is adopted to measure the derivative of return currents of the order of kA ns ${}<^>{-1}$ and analysis methodology is developed to derive return currents. We compare the current for copper, aluminium and Kapton targets at different laser energies. The data show the stable production of current peaks and clear prospects for the tailoring of the pulse shape, which is promising for future applications in high-energy-density science, for example, electromagnetic interference stress tests, high-voltage pulse response measurements and charged particle beam lensing. We compare the target discharge of the order of hundreds of nC with theoretical predictions and a good agreement is found.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)

Project
<a href="/en/project/GM23-05027M" target="_blank" >GM23-05027M: Strong electromagnetic pulses: their generation, characterization and control</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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