Results 31 to 40 of about 1,210,902 (300)
Production of Cold Positronium Atoms
Acta Physica Polonica A, 2008 . In order to study antimatter physical properties (CPT(charge, parity, time) invariance and principle of equivalence test) it is nec-essary to keep this system at the lowest possible (sub-kelvin) temperatures.This requires the generation of a suitable °ux of cold Ps atoms in a vacuum,a non-trivial requirement at the light of the present experimental ...
R. S. Brusa +5 more
openaire +4 more sources
Cold atom clocks and applications [PDF]
Journal of Physics B: Atomic, Molecular and Optical Physics, 2005 30 pages, 11 ...
Bize, Sébastien +16 more
openaire +4 more sources
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
A cold strontium Rydberg gas [PDF]
, 2011 Cold gases of Rydberg atoms are an ideal system in which to study the novel effects of strong interatomic interactions. This thesis describes the design and construction of the world's first experiment to study Rydberg states in a cold gas of an alkaline
MILLEN, JAMES
core
Cooperative Optical Non-linearity in a blockaded Rydberg Ensemble [PDF]
, 2011 This thesis describes the observation of a novel optical non-linearity mediated by the dipole-dipole interactions in a cold gas of Rydberg atoms. Electromagnetically induced transparency (EIT) is used to map the strong dipolar interactions onto an ...
Pritchard, Jonathan David +2 more
core +1 more source
Subradiance and radiation trapping in cold atoms
New Journal of Physics, 2018 We experimentally and numerically study the temporal dynamics of light scattered by large clouds of cold atoms after the exciting laser is switched off, in the low intensity (linear-optics) regime. Radiation trapping due to multiple scattering as well as
Patrizia Weiss +3 more
doaj +1 more source
FEBS Letters, EarlyView.Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil +3 more
wiley +1 more source
Optomechanical coupling between ultracold atoms and a membrane oscillator [PDF]
, 2014 In this thesis, I report on the realization of a hybrid optomechanical system in which ultracold atoms are coupled to a micromechanical membrane. The atoms are trapped in the intensity maxima of an optical standing wave formed by retroreflection of a ...
Korppi, Maria
core +1 more source
Artificial atoms from cold bosons in one dimension
New Journal of Physics, 2022 We investigate the ground-state properties of weakly repulsive one-dimensional bosons in the presence of an attractive zero-range impurity potential. First, we derive mean-field solutions to the problem on a finite ring for the two asymptotic cases: (i ...
Fabian Brauneis +5 more
doaj +1 more source
Self-Organization in Cold Atoms Mediated by Diffractive Coupling
Atoms, 2021 This article discusses self-organization in cold atoms via light-mediated interactions induced by feedback from a single retro-reflecting mirror. Diffractive dephasing between the pump beam and the spontaneous sidebands selects the lattice period ...
Thorsten Ackemann +10 more
doaj +1 more source