Results 41 to 50 of about 3,424,751 (303)

Stochastic dynamics of remote knock-on permeation in biological ion channels [PDF]

open access: yes, 2013
Brownian dynamics simulations provide evidence for a remote knock-on mechanism facilitating the permeation of a biological ion channel by an ion that is initially trapped at the selectivity filter (SF).
Eisenberg, Robert S.   +5 more
core   +2 more sources

Particle‐In‐Cell Modeling of Martian Magnetic Cusps and Their Role in Enhancing Nightside Ionospheric Ion Escape

open access: yesGeophysical Research Letters, 2020
Amongst various escape channels, ion outflow is a major contributor to atmospheric loss at Mars over geologic time. On Mars' nightside, observations have indicated that cusp regions within crustal magnetic fields are associated with phenomena such as ...
A. Poppe   +4 more
semanticscholar   +1 more source

A statistical study on O+ flux in the dayside magnetosheath [PDF]

open access: yesAnnales Geophysicae, 2013
Studies on terrestrial oxygen ion (O+) escape into the interplanetary space have considered a number of different escape paths. Recent observations however suggest a yet insufficiently investigated additional escape route for hot O+: along open ...
R. Slapak   +3 more
doaj   +1 more source

Energy-Loss Straggling and Delta-Ray Escape in Solid-State Microdosimeters Used in Ion-Beam Therapy

open access: yesJournal of Nuclear Engineering, 2022
Microdosimetry is increasingly adopted in the characterization of proton and carbon ion beams used in cancer therapy. Spectra and mean values of lineal energy calculated in frequency and dose are seen by many as the tools which, by complementing ...
Giulio Magrin   +4 more
doaj   +1 more source

Photonic measurements of the longitudinal expansion dynamics in Heavy-Ion collisions [PDF]

open access: yes, 2005
Due to the smallness of the electromagnetic coupling, photons escape from the hot and dense matter created in an heavy-ion collision at all times, in contrast to hadrons which are predominantly emitted in the final freeze-out phase of the evolving system.
B. Tomasik   +3 more
core   +1 more source

Oxygen Ion Escape From Venus Is Modulated by Ultra‐Low Frequency Waves

open access: yesGeophysical Research Letters, 2020
We study the solar wind‐driven, nonthermal escape of O+ ions from Venus in a global hybrid simulation. In the model, a well‐developed ion foreshock forms ahead of the Venusian quasi‐parallel bow shock under nominal upstream conditions.
R. Jarvinen   +3 more
semanticscholar   +1 more source

Global Electric Fields at Mars Inferred from Multifluid Hall-MHD Simulations

open access: yesThe Astrophysical Journal, 2023
In the Martian induced magnetosphere, the motion of planetary ions is significantly controlled by the ambient electric fields, which can be decomposed into three components: the motional, Hall, and ambipolar electric fields.
Shibang Li   +10 more
doaj   +1 more source

Correlations and pair emission in the escape dynamics of ions from one-dimensional traps

open access: yes, 2010
We explore the non-equilibrium escape dynamics of long-range interacting ions in one-dimensional traps. The phase space of the few ion setup and its impact on the escape properties are studied.
Blümel R   +8 more
core   +1 more source

The universal freeze-out criterion at SPS and RHIC [PDF]

open access: yes, 2002
We formulate a freeze-out criterion for ultra-relativistic heavy ion collisions in terms of the pion escape probability from the collision region. We find that the increase in pion phase-space density from SPS to RHIC reported at this conference has a ...
Bondorf   +6 more
core   +2 more sources

Influence of the Martian crustal magnetic fields on oxygen ion escape at Mars

open access: yesAstronomy & Astrophysics
Context. The escape of oxygen ions from Mars has played a crucial role in the planet’s long-term atmospheric evolution and habitability. The crustal magnetic fields influence ion escape, but the exact role remains debated. Previous studies have presented
Zhou Jingyi   +7 more
doaj   +1 more source

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