Results 21 to 30 of about 30,906 (248)

Thermal Freeze‐Out Parameters and Pseudoentropy from Charged Hadron Spectra in High‐Energy Collisions

open access: yesAdvances in High Energy Physics, Volume 2022, Issue 1, 2022., 2022
We collected the transverse momentum (mass) spectra of charged hadrons (π−, π+, K−, K+, p¯, and p) produced in collisions over a center‐of‐mass energy range from 2.70 to 200 GeV (per nucleon pair). The modified Tsallis–Pareto‐type function (the TP‐like function) with average transverse flow velocity is used to describe the contribution of participant ...
Xu-Hong Zhang   +4 more
wiley   +1 more source

Astrophysics in the Laboratory—The CBM Experiment at FAIR

open access: yesParticles, 2020
The future “Facility for Antiproton and Ion Research” (FAIR) is an accelerator-based international center for fundamental and applied research, which presently is under construction in Darmstadt, Germany.
Peter Senger
doaj   +1 more source

Probing Compressed Baryonic Matter

open access: yesUniverse, 2022
The objective of the compressed baryonic matter (CBM) experiment at the future Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, is the investigation of the fundamental properties of strongly interacting matter.
Peter Senger
doaj   +1 more source

Are antiprotons forever? [PDF]

open access: yesPhysics Letters A, 1996
12 pages, latex; 4 figures, uufiled. Slightly expanded discussion of expected energy dependence of annihilation cross section and rate, and of estimates of trap pressure, plus minor text ...
Holzscheiter, M. H.   +6 more
openaire   +2 more sources

Auf der Suche nach kosmischer Antimaterie

open access: yesPhysik in unserer Zeit, Volume 52, Issue 6, Page 274-281, November 2021., 2021
Im Mai 2011 wurde das Alpha Magnetic Spectrometer (AMS‐02) mit dem letzten Flug des Space‐Shuttles Endeavour auf die Internationale Raumstation gebracht. Seitdem erfasst es die geladene kosmische Strahlung mit bisher nie erreichter Präzision und liefert neue Einblicke in hochenergetische Prozesse in unserer Milchstraße.
Stefan Schael
wiley   +1 more source

Quantenlogik‐Uhren

open access: yesPhysik in unserer Zeit, Volume 52, Issue 4, Page 183-189, July 2021., 2021
Einige Atome sind durch Laserkühlung inzwischen so gut kontrollierbar, dass bereits optische Uhren mit Unsicherheiten im Bereich von 10–18 realisiert wurden. Vielen Atomen und den meisten Molekülen, die besonders empfindlich auf physikalische Effekte jenseits des Standardmodells reagieren, fehlt jedoch ein Übergang zum Laserkühlen.
Piet O. Schmidt
wiley   +1 more source

Tank‐Circuit Assisted Coupling Method for Sympathetic Laser Cooling

open access: yesAdvanced Quantum Technologies, Volume 4, Issue 7, July 2021., 2021
A novel scheme is presented that allows to efficiently cool arbitrary ions by coupling them to a directly laser cooled ion in a separate Penning trap. The results demonstrate how a common tank circuit can drastically enhance the coupling, resulting in the expected avoided‐crossing behavior.
Bingsheng Tu   +11 more
wiley   +1 more source

The Double-Nozzle Technique Equipped with RF-Only Funnel and RF-Buncher for the Ion Beam Extraction into Vacuum

open access: yesAtoms, 2023
This study is a further development of our “Proposal of a new double-nozzle technique for in-gas-jet laser resonance ionization spectroscopy” paper published in the journal Atoms earlier this year.
Victor Varentsov
doaj   +1 more source

Properties of the quark‐gluon plasma created in heavy‐ion collisions

open access: yesAstronomische Nachrichten, Volume 342, Issue 5, Page 715-726, June 2021., 2021
Abstract We review the properties of the strongly interacting quark‐gluon plasma (QGP) at finite temperature and baryon chemical potential as created in heavy‐ion collisions at ultrarelativistic energies. The description of the strongly interacting (non‐perturbative) QGP in equilibrium is based on the effective propagators and couplings from the ...
Pierre Moreau   +8 more
wiley   +1 more source

Neutron star collisions and gravitational waves

open access: yesAstronomische Nachrichten, Volume 342, Issue 5, Page 788-798, June 2021., 2021
Abstract The long‐awaited detection of a gravitational wave from the merger of a binary neutron star in August 2017 (GW170817) marked the beginning of the new field of multi‐messenger gravitational wave astronomy. By exploiting the extracted tidal deformations of the two neutron stars from the late inspiral phase of GW170817, it was possible to ...
Matthias Hanauske, Lukas R. Weih
wiley   +1 more source

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