High-repetition-rate source of nanosecond duration kA-current pulses driven by relativistic laser pulses
| Autor: | Michael Ehret, Jakub Cikhardt, Philip Wykeham Bradford, Iuliana-Mariana Vladisavlevici, Tomas Burian, Diego de Luis, Jose Luis Henares, Rubén Hernández Martín, Jon Imanol Apiñaniz, Roberto Lera, José Antonio Pérez-Hernández, João Jorge Santos, Giancarlo Gatti |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | High Power Laser Science and Engineering, Vol 12 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2095-4719 2052-3289 |
| DOI: | 10.1017/hpl.2024.14 |
| Popis: | 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 $5\times {10}^{18}$ to $1.3\times {10}^{20}$ 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. |
| Databáze: | Directory of Open Access Journals |
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