Results 21 to 30 of about 1,448,953 (255)
Effect of ion-trap parameters on energy distributions of ultra-cold atom–ion mixtures
New Journal of Physics, 2020 Experiments in which ultra-cold neutral atoms and charged ions are overlapped, constitute a new field in atomic and molecular physics, with applications ranging from studying out-of-equilibrium dynamics to simulating quantum many-body systems.
Meirav Pinkas +5 more
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, 2011 The effects of kinetic energy on the outcomes of exothermic and endothermic ion/molecule reactions in a quadrupole ion trap mass spectrometer are examined.
Wu, H. F. ; 吳慧芬; Brodbelt, J. S.
core +1 more source
Modification of the Stability Regions in Stretched Paul Ion Trap by Damping Force [PDF]
مجله علوم و فنون هستهای, 2017 With the change of an ion trap geometrical shape, ring and end-cap electrodes, and also damping force effects, the first and second stability regions are studied in a stretched Paul ion trap.
I Ziaeian +3 more
doaj
Fragmentations of protonated benzaldehydes via intermediate ion/molecule complexes [PDF]
, 1986 Filges U, Grützmacher H-F. Fragmentations of protonated benzaldehydes via intermediate ion/molecule complexes. Organic Mass Spectrometry.
U. Filges +3 more
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Thermometry in a Multipole Ion Trap
Applied Sciences, 2020 We present a characterization of the ions’ translational energy distribution in a multipole ion trap. A linear mapping between the energy distribution of the trapped ions onto the ions’ time-of-flight (TOF) to a detector is demonstrated.
Markus Nötzold +5 more
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Loading a Paul Trap: Densities, Capacities, and Scaling in the Saturation Regime
Atoms, 2021 Providing ideal conditions for the study of ion-neutral collisions, we investigate here the properties of the saturated, steady state of a three-dimensional Paul trap, loaded from a magneto-optic trap.
Reinhold Blümel
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Simulation and Calculation of Assembly Error of Linear Ion Trap
Zhipu XuebaoAs the core part of the portable mass spectrometers, the ion trap mass analyzer is equivalent to the "engine", which determines the analytical capability of the mass spectrometer.
Xiao-long LI +3 more
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Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
Stability study of intense hadron bunches in linear accelerators using a Paul ion trap
Physical Review Accelerators and Beams, 2022 The collective behavior of an ion cloud confined in a linear Paul trap is physically almost equivalent to that of a relativistic beam traveling in a particle accelerator.
M. Goto +4 more
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FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source