TY  - JOUR
AU  - Klimesova, Eva
AU  - Kulyk, Olena
AU  - Martin, Lucas J
AU  - Schuette, Bernd
AU  - Fruehling, Ulrike
AU  - Drescher, Markus
AU  - Pan, Rui
AU  - Stojanovic, Nikola
AU  - Bermudez Macias, Ivette J
AU  - Düsterer, Stefan
AU  - Andreasson, Jakob
AU  - Wieland, Marek
AU  - Krikunova, Maria
TI  - Electron thermalization and ion acceleration in XUV-produced plasma from nanoparticles in He gas environment
JO  - New journal of physics
VL  - 27
IS  - 1
SN  - 1367-2630
CY  - [Bad Honnef]
PB  - Dt. Physikalische Ges.
M1  - PUBDB-2025-01016
SP  - 013004
PY  - 2025
AB  - We use intense femtosecond extreme ultraviolet (XUV) pulses with a photon energy of 92 eV from the FLASH free electron laser to irradiate substrate-free CsCl nanoparticles surrounded by a He gas with a number density of around 10<sup>15</sup>  cm<sup>−3</sup>. By simultaneously detecting electrons and energetic ions from the laser-irradiated micron-size target we study the acceleration mechanism of light ions at the microplasma-vacuum boundary as well as at the layer close to the nanoparticle surface. When the XUV pulse interacts with the gas alone, helium ions are accelerated to energies exceeding 100 eV. In the presence of the nanoparticle, light ions gain additional energy in the electric field around the ionized nanoparticle and their energy spectrum changes considerably. We present an electrostatic model to explain the ion acceleration mechanisms both with and without the nanoparticle and discuss the role of the gas environment in experiments.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001396529800001
DO  - DOI:10.1088/1367-2630/ada575
UR  - https://bib-pubdb1.desy.de/record/625065
ER  -