Comprehensive characterization of electromagnetic pulses driven by sub-nanosecond terawatt-class laser

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F24%3A00616840" target="_blank" >RIV/61389021:_____/24:00616840 - isvavai.cz</a>
Result on the web
<a href="https://ojs.cvut.cz/ojs/index.php/PPT/article/view/9980/7184" target="_blank" >https://ojs.cvut.cz/ojs/index.php/PPT/article/view/9980/7184</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Comprehensive characterization of electromagnetic pulses driven by sub-nanosecond terawatt-class laser
Original language description
During an interaction of a high-power laser beam with a target, extremely intense electromagnetic pulses (EMP) are emitted in the MHz-THz band reaching up to hundreds of kV/m. Such extreme EMPs are interesting not only for numerous applications, but also for their physical mechanisms. This contribution presents a comprehensive characterization of the EMP emission produced by irradiating the massive and foil Cu targets with the single beam of PALS laser system (0.3 ns, 700 J). In the presented experiments, an extensive set of diagnostics have been used. Thanks to the ultra-fast magnetic and electric field detectors and horn antennas, broadband EMP emission with frequencies up to 10 GHz was observed. By varying the energy of the interaction laser, we observed a dependence of the EMP spectrum shape on the laser beam energy. This indicates that the EMP spectrum shape is related to the processes in the laser plasma rather than to eigenfrequencies of experimental hardware.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

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

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