Results 51 to 60 of about 68,073 (265)

Stückelberg-interferometry with ultra-cold atoms [PDF]

The European Physical Journal D, 2011
We show that and how ultra-cold atoms in an accelerated two-band lattice are a controlled realization of Landau--Zener--Stückelberg interferometry.
Plötz P., WIMBERGER, Sandro Marcel
openaire   +3 more sources

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source

Long-range versus short-range effects in cold molecular ion-neutral collisions

Nature Communications, 2019
Studies on reactions between cold molecular ions and neutral atoms provide insights into intermolecular interactions. Here the authors explore the kinetics and dynamics of charge-transfer collisions between the cold N$${}_{2}^{+}$$ 2+ and O$${}_{2}^{+}$$
Alexander D. Dörfler, Pascal Eberle, Debasish Koner, Michał Tomza, Markus Meuwly, Stefan Willitsch   +5 more
doaj   +1 more source

Detection of spin coherence in cold atoms via Faraday rotation fluctuations

Physical Review Research, 2021
We report noninvasive detection of spin coherence in a collection of Raman-driven cold atoms using dispersive Faraday rotation fluctuation measurements, which opens possibilities of probing spin correlations in quantum gases and other similar systems. We
Maheswar Swar, Dibyendu Roy, Subhajit Bhar, Sanjukta Roy, Saptarishi Chaudhuri   +4 more
doaj   +1 more source

Hamiltonian Ratchets with Ultra‐Cold Atoms [PDF]

Annalen der Physik, 2017
Quantum‐resonance ratchets have been realized over the last ten years for the production of directed currents of atoms. These non‐dissipative systems are based on the interaction of a Bose‐Einstein condensate with an optical standing wave potential to produce a current of atoms in momentum space.
Ni, Jiating, Dadras, Siamak, Lam, Wa Kun, Shrestha, Rajendra K., Sadgrove, Mark, WIMBERGER, Sandro Marcel, Summy, Gil S.   +6 more
openaire   +3 more sources

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Reservoir engineering of Cooper-pair-assisted transport with cold atoms

New Journal of Physics, 2019
We show how Cooper-pair-assisted transport, which describes the stimulated transport of electrons in the presence of Cooper-pairs, can be engineered and controlled with cold atoms, in regimes that are difficult to access for condensed matter systems. Our
François Damanet, Eduardo Mascarenhas, David Pekker, Andrew J Daley   +3 more
doaj   +1 more source

Photonic integrated beam delivery for a rubidium 3D magneto-optical trap

Nature Communications, 2023
Cold atoms are important for precision atomic applications including timekeeping and sensing. The 3D magneto-optical trap (3D-MOT), used to produce cold atoms, will benefit from photonic integration to improve reliability and reduce size, weight, and ...
Andrei Isichenko, Nitesh Chauhan, Debapam Bose, Jiawei Wang, Paul D. Kunz, Daniel J. Blumenthal   +5 more
doaj   +1 more source

Quasiperiodically Driven Ratchets for Cold Atoms [PDF]

Physical Review Letters, 2006
We investigate experimentally the route to quasiperiodicity in a driven ratchet for cold atoms, and examine the relationship between symmetries and transport while approaching the quasiperiodic limit. Depending on the specific form of driving, quasiperiodicity results in the complete suppression of transport, or into the restoration of the symmetries ...
Gommers, R, Denisov, S, Renzoni, F
openaire   +7 more sources

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source