Explanipedia

Spectroscopically resolved resonant interatomic Coulombic decay in photoexcited large He nanodroplets Open

Ltaief Ben Ltaief, Keshav Sishodia, Robert Richter, Björn Bastian, Jakob D. Asmussen , et al. · 2024

Interatomic Coulombic decay (ICD) processes play a crucial role in weakly bound complexes exposed to intense or high-energy radiation. Using large helium nanodroplets, we demonstrate that ICD is efficient even when the droplets are irradia…

Spectroscopically resolved resonant interatomic Coulombic decay in photoexcited large He nanodroplets Open

Ltaief Ben Ltaief, Keshav Sishodia, Robert Richter, Björn Bastian, Jakob D. Asmussen , et al. · 2023

Interatomic Coulombic decay (ICD) processes play a crucial role in weakly bound complexes exposed to intense or high-energy radiation. Using large helium nanodroplets, we demonstrate that ICD is efficient even when the droplets are irradia…

Relaxation dynamics of <sup>3</sup>He and <sup>4</sup>He clusters and droplets studied using near infrared and visible fluorescence excitation spectroscopy Open

K. von Haeften, Tim Laarmann, H. Wabnitz, T. Möller · 2022

The relaxation dynamics of electronically excited 3 He and 4 He clusters and droplets is investigated using time-correlated near-infrared and visible (NIR/VIS) fluorescence excitation spectroscopy.

An intense source for cold cluster ions of a specific composition Open

Lukas Tiefenthaler, João Ameixa, Paul Martini, Simon Albertini, Lorenz Ballauf , et al. · 2020

The demand for nanoscale materials of ultra-high purity and narrow size distribution is addressed. Clusters of Au, C60, H2O, and serine are produced inside helium nanodroplets using a combination of ionization, mass filtering, collisions w…

Silver nanoparticles by atomic vapour deposition on an alcohol micro-jet Open

Michael J. McNally, Gediminas Galinis, Oliver Youle, Martin Petr, Robert Prucek , et al. · 2019

Nanoparticles produced when ethanol jet exits nozzle (a), over silver vapour source (b), captured in a cold trap (c).

Atomic fluorescence emitted from a corona discharge in helium above and below saturated vapour pressure Open

Nagham M. Shiltagh, Luis Guillermo Mendoza‐Luna, Mark J. Watkins, S. C. Thornton, K. von Haeften · 2018

Contribution to the Topical Issue “Dynamics of Molecular Systems (MOLEC 2016)”, edited by Alberto Garcia-Vela, Luis Banares and Maria Luisa Senent.

Fluorescent silicon clusters and nanoparticles Open

K. von Haeften · 2017

Fluorescent silicon clusters and nanoparticles are also attractive in biomedical applications because nanoscale silicon and silicon dioxide are considered to be nontoxic, or at least considerably less harmful than fluorescent nanoparticles…

Excimers in the Lowest Rotational Quantum State in Liquid Helium Open

Luis Guillermo Mendoza‐Luna, Nagham M. Shiltagh, Mark J. Watkins, Nelly Bonifaci, Frédéric Aitken , et al. · 2016

Evidence for helium excimers (He₂^*) in the lowest allowed rotational quantum state in liquid helium is presented. He₂^* was generated by a corona discharge in the gas and normal liquid phases. Flu…

Theoretical modeling of electron mobility in superfluid 4He Open

Frédéric Aitken, Nelly Bonifaci, K. von Haeften, Jussi Eloranta · 2016

The Orsay-Trento bosonic density functional theory model is extended to include dissipation due to the viscous response of superfluid 4He present at finite temperatures. The viscous functional is derived from the Navier-Stokes equation by …

Nucleation, solvation and boiling of helium excimer clusters Open

Luis Guillermo Mendoza‐Luna, Nagham M. Siltagh, Mark J. Watkins, Nelly Bonifaci, Frédéric Aitken , et al. · 2015

Helium excimers generated by a corona discharge were investigated in the gas and normal liquid phases of helium as a function of temperature and pressure between 3.8 and 5.0 K and 0.2 and 5.6 bar. Intense fluorescence in the visible region…

Nanoscale stripe arrays templated on Moiré patterns in graphite Open

Michael J. McNally, Mümin Mehmet Koç, G. Torricelli, K. von Haeften · 2015

Formation of Positively Charged Liquid Helium Clusters in Supercritical Helium and their Solidification Upon Compression Open

Nelly Bonifaci, Frédéric Aitken, Luis Guillermo Mendoza‐Luna, K. von Haeften · 2015

Positively charged ions were produced in supercritical helium at temperatures from 6 to\n10 K and up to 2 MPa using a corona discharge. Their mobility was measured via currentvoltage\ncurves and the hydrodynamic radius was derived using St…

Modelling the mobility of positive ion clusters in normal liquid helium over large pressure ranges Open

Frédéric Aitken, Nelly Bonifaci, Luis Guillermo Mendoza‐Luna, K. von Haeften · 2015

Positively charged helium clusters, also called ‘snowballs’, have been investigated within normal liquid helium.

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