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Article Dans Une Revue Matter and Radiation at Extremes Année : 2024

Ion emission from warm dense matter produced by irradiation with a soft x-ray free-electron laser

Josef Krása
Tomáš Burian
Věra Hájková
Jaromír Chalupský
Šimon Jelínek
Kateřina Frantálová
Michal Krupka
Zuzana Kuglerová
Sushil Kumar Singh
Vojtěch Vozda
Luděk Vyšín
Michal Šmíd
Pablo Perez-Martin
Marion Kühlman
Juan Pintor
Jakub Cikhardt
Matthias Dreimann
Dennis Eckermann
  • Fonction : Auteur
Felix Rosenthal
  • Fonction : Auteur
Sam Vinko
Alessandro Forte
Thomas Gawne
Thomas Campbell
Shenyuan Ren
  • Fonction : Auteur
Yuanfeng Shi
Trevor Hutchinson
Oliver Humphries
Thomas Preston
Mikako Makita
Motoaki Nakatsutsumi
Xiayun Pan
Alexander Köhler
Marion Harmand
Sven Toleikis
Katerina Falk
Libor Juha

Résumé

We report on an experiment performed at the FLASH2 free-electron laser (FEL) aimed at producing warm dense matter via soft x-ray isochoric heating. In the experiment, we focus on study of the ions emitted during the soft x-ray ablation process using time-of-flight electron multipliers and a shifted Maxwell–Boltzmann velocity distribution model. We find that most emitted ions are thermal, but that some impurities chemisorbed on the target surface, such as protons, are accelerated by the electrostatic field created in the plasma by escaped electrons. The morphology of the complex crater structure indicates the presence of several ion groups with varying temperatures. We find that the ion sound velocity is controlled by the ion temperature and show how the ion yield depends on the FEL radiation attenuation length in different materials.
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Dates et versions

hal-04308501 , version 1 (27-11-2023)

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Josef Krása, Tomáš Burian, Věra Hájková, Jaromír Chalupský, Šimon Jelínek, et al.. Ion emission from warm dense matter produced by irradiation with a soft x-ray free-electron laser. Matter and Radiation at Extremes, 2024, 9 (1), ⟨10.1063/5.0157781⟩. ⟨hal-04308501⟩
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