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17 papers · 1 filter
Spin fine-structure reveals bi-exciton geometry in an organic semiconductor
K. M. Yunusova, S. L. Bayliss, T. Chanelière +4
In organic semiconductors, bi-excitons are key intermediates in carrier-multiplication and exciton annihilation. Their local geometry governs their electronic properties and yet ha…
R&D around a photoneutralizer-based NBI system (Siphore) in view of a DEMO Tokamak steady state fusion reactor
A. Simonin, Jocelyn Achard, K. Achkasov +28
Since the signature of the ITER treaty in 2006, a new research programme targeting the emergence of a new generation of Neutral Beam (NB) system for the future fusion reactor (DEMO…
Rydberg-positronium velocity and self-ionization studies in 1T magnetic field and cryogenic environment
M. Antonello, A. Belov, G. Bonomi R. S. Brusa +43
We characterized the pulsed Rydberg-positronium production inside the AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) apparatus in view of antihydrogen formati…
Product-state distribution after isotopic substitution in ultracold atom-molecule collisions
Maciej B. Kosicki, Piotr S. Żuchowski, Maykel L. González-Martínez +1
We show that products of the isotopic substitution reactions in experimentally accessible molecules such as NaK, RbCs, and SrF are cold according to their translational energy belo…
Narrow-Band Pulsed Electron Source Based on Near-Threshold Photoionization of Cs in a Magneto-Optical Trap
O. Fedchenko, S. Chernov, G. Schönhense +2
The newly developed method of time-of-flight (ToF) momentum microscopy was used to analyse the cold electron emission from a Cs 3D magneto-optical trap (MOT). Three-step resonant p…
Super-localization of excitons in carbon nanotubes at cryogenic temperature
Christophe Raynaud, Théo Claude, Antoine Borel +6
At cryogenic temperature and at the single emitter level, the optical properties of single-wall carbon nanotubes depart drastically from that of a one-dimensional (1D) object. In f…