Results 11 to 20 of about 1,070,439 (192)

Counting cold collisions [PDF]

open access: yesJournal of Physics B: Atomic, Molecular and Optical Physics, 2000
LaTeX 2e, 5 pages, 4 Postscript ...
Ueberholz, B   +4 more
core   +7 more sources

Cold heteromolecular dipolar collisions [PDF]

open access: yesPhysical Chemistry Chemical Physics, 2011
We present the first experimental observation of cold collisions between two different species of neutral polar molecules, each prepared in a single internal quantum state. Combining for the first time the techniques of Stark deceleration, magnetic trapping, and cryogenic buffer gas cooling allows the enhancement of molecular interaction time by 10$^5$.
Sawyer, Brian C.   +9 more
openaire   +7 more sources

Cold Heteronuclear Atom-Ion Collisions [PDF]

open access: yesPhysical Review Letters, 2010
We study cold heteronuclear atom ion collisions by immersing a trapped single ion into an ultracold atomic cloud. Using ultracold atoms as reaction targets, our measurement is sensitive to elastic collisions with extremely small energy transfer. The observed energy-dependent elastic atom-ion scattering rate deviates significantly from the prediction of
Zipkes C   +4 more
openaire   +6 more sources

Suppression of non-prompt J/ψ, prompt J/ψ, and Y(1S) in PbPb collisions at √s NN = 2.76 TeV [PDF]

open access: yes, 2012
This is the Pre-print verison of the Article. The official published version can be accessed from the link below - Copyright @ 2012 Springer VerlagYields of prompt and non-prompt J/ψ, as well as U (1S) mesons, are measured by the CMS experiment via their
Karjalainen, A   +497 more
core   +7 more sources

Collisions in a dual-species magneto-optical trap of molecules and atoms

open access: yesNew Journal of Physics, 2021
We study inelastic collisions between CaF molecules and ^87 Rb atoms in a dual-species magneto-optical trap. The presence of atoms increases the loss rate of molecules from the trap.
S Jurgilas   +6 more
doaj   +1 more source

Measurement of the differential cross-section of B + meson production in pp collisions at √s=7 TeV at ATLAS [PDF]

open access: yes, 2013
The production cross-section of B + mesons is measured as a function of transverse momentum p T and rapidity y in proton-proton collisions at centre-of-mass energy s√=7 TeV, using 2.4 fb−1 of data recorded with the ATLAS detector at the Large Hadron ...
Farrington, Sinead   +5 more
core   +11 more sources

Cross-calibration of atomic pressure sensors and deviation from quantum diffractive collision universality for light particles

open access: yesNew Journal of Physics, 2023
The room-temperature, velocity-averaged, total cross section for atom–atom and atom–molecule collisions can be approximated using a universal function depending only on the magnitude of the leading order dispersion coefficient, C _6 . This feature of the
Pinrui Shen   +8 more
doaj   +1 more source

Effect of ion-trap parameters on energy distributions of ultra-cold atom–ion mixtures

open access: yesNew 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
doaj   +1 more source

Low-energy collisions between carbon atoms and oxygen molecules in a magnetic trap

open access: yesNew Journal of Physics, 2020
Trapping of atoms and molecules in electrostatic, magnetic and optical traps has enabled studying atomic and molecular interactions on a timescale of many seconds, allowing observations of ultra-cold collisions and reactions.
Michael Karpov   +4 more
doaj   +1 more source

Molecular vibration in cold-collision theory [PDF]

open access: yesPhysical Review A, 2002
Cold collisions of ground state oxygen molecules with Helium have been investigated in a wide range of cold collision energies (from 1 $μ$K up to 10 K) treating the oxygen molecule first as a rigid rotor and then introducing the vibrational degree of freedom. The comparison between the two models shows that at low energies the rigid rotor approximation
Volpi, Alessandro, Bohn, John L.
openaire   +2 more sources

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