Journal Article

PUBDB-2025-01016

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Electron thermalization and ion acceleration in XUV-produced plasma from nanoparticles in He gas environment

Klimesova, E. (Corresponding author)Extern* ; Kulyk, O.Extern* ; Martin, L. J. ; Schuette, B.Extern* ; Fruehling, U.DESY* ; Drescher, M.Extern* ; Pan, R.DESY* ; Stojanovic, N.Extern* ; Bermudez Macias, I. J.Extern*XFEL.EU* ; Düsterer, S.XFEL.EU*DESY* ; Andreasson, J.Extern* ; Wieland, M.Extern* ; Krikunova, M.Extern*

2025
Dt. Physikalische Ges. [Bad Honnef]

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Please use a persistent id in citations: doi:10.1088/1367-2630/ada575  doi:10.3204/PUBDB-2025-01016

Abstract: 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$^{15}$  cm$^{−3}$. 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.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. FLASH Wissenschaftlicher Nutzerbetrieb (FS-FLASH-O)
3. FLASH Photonen-Strahlführungen und Optiken (FS-FLASH-B)
4. FLASH Photonen-Diagnose und Steuerungen (FS-FLASH-D)
5. Uni Hamburg / Experimentalphysik (UNI/EXP)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. 6G2 - FLASH (DESY) (POF4-6G2) (POF4-6G2)
3. FS-Proposal: F-20170535 (F-20170535) (F-20170535)
4. DFG project G:(GEPRIS)194651731 - EXC 1074: Hamburger Zentrum für ultraschnelle Beobachtung (CUI): Struktur, Dynamik und Kontrolle von Materie auf atomarer Skala (194651731) (194651731)

Experiment(s):

1. FLASH Beamline BL3 (FLASH)

Appears in the scientific report 2025

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