TY  - JOUR
AU  - Krasa, Josef
AU  - Burian, Tomáš
AU  - Hájková, Věra
AU  - Chalupský, Jaromír
AU  - Jelínek, Šimon
AU  - Frantálová, Kateřina
AU  - Krupka, Michal
AU  - Kuglerová, Zuzana
AU  - Singh, Sushil Kumar
AU  - Vozda, Vojtěch
AU  - Vyšín, Luděk
AU  - Šmíd, Michal
AU  - Perez-Martin, Pablo
AU  - Kuhlmann, Marion
AU  - Pintor, Juan
AU  - Cikhardt, Jakub
AU  - Dreimann, Matthias
AU  - Eckermann, Dennis
AU  - Rosenthal, Felix
AU  - Vinko, Sam M.
AU  - Forte, Alessandro
AU  - Gawne, Thomas
AU  - Campbell, Thomas
AU  - Ren, Shenyuan
AU  - Shi, YuanFeng
AU  - Hutchinson, Trevor
AU  - Humphries, Oliver
AU  - Preston, Thomas
AU  - Makita, Mikako
AU  - Nakatsutsumi, Motoaki
AU  - Pan, Xiayun
AU  - Köhler, Alexander
AU  - Harmand, Marion
AU  - Toleikis, Sven
AU  - Falk, Katerina
AU  - Juha, Libor
TI  - Ion emission from warm dense matter produced by irradiation with a soft x-ray free-electron laser
JO  - Matter and radiation at extremes
VL  - 9
IS  - 1
SN  - 2468-2047
CY  - Melville, NY
PB  - AIP Publishing
M1  - PUBDB-2024-05391
SP  - 016602
PY  - 2024
AB  - 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. 
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001104511900002
DO  - DOI:10.1063/5.0157781
UR  - https://bib-pubdb1.desy.de/record/612572
ER  -