Results 31 to 40 of about 708,849 (309)
Simultaneous acceleration of protons and electrons at nonrelativistic quasiparallel collisionless shocks. [PDF]
Physical Review Letters, 2014 We study diffusive shock acceleration (DSA) of protons and electrons at nonrelativistic, high Mach number, quasiparallel, collisionless shocks by means of self-consistent 1D particle-in-cell simulations.
Jaehong Park, D. Caprioli, A. Spitkovsky
semanticscholar +1 more source
Enantioselective protonation [PDF]
Nature Chemistry, 2009 Enantioselective protonation is a common process in biosynthetic sequences. The decarboxylase and esterase enzymes that effect this valuable transformation are able to control both the steric environment around the proton acceptor (typically an enolate) and the proton donor (typically a thiol).
Mohr, Justin T. +2 more
openaire +3 more sources
Life, 2021 There are serious concerns about possible late radiation damage to ocular tissue from prolonged space radiation exposure, and occupational and medical procedures.
Xiao-Wen Mao +3 more
doaj +1 more source
Electron Emission Cross Section from Methane under 250 keV Proton Impact
Atoms, 2023 We measure double differential cross sections (DDCS) of electrons emitted from CH4 molecules in collisions with 250 keV protons. The projectile ions are obtained from a 400 kV electron cyclotron resonance-based ion accelerator (ECRIA).
Debasmita Chakraborty +2 more
doaj +1 more source
Protons Interaction with Nomex Target: Secondary Radiation from a Monte Carlo Simulation with Geant4
Applied Sciences, 2022 The study of suitable materials to shield astronauts from Galactic Cosmic Rays (GCR) is a topic of fundamental importance. The choice of the material must take into account both the secondary radiation produced by the interaction between primary ...
Filomena Loffredo +4 more
doaj +1 more source
In Situ Observations of Blistering of a Metal Irradiated with 2-MeV Protons
Metals, 2017 A vacuum-insulated tandem accelerator was used to observe in situ blistering during 2-MeV proton irradiation of metallic samples to a fluence of up to 6.7 × 1020 cm−2.
Alexander Badrutdinov +12 more
doaj +1 more source
Describing the scattering of keV protons through graphene
Frontiers in Chemistry, 2023 Implementing two-dimensional materials in technological solutions requires fast, economic, and non-destructive tools to ensure efficient characterization.
Jakob Bühler +2 more
doaj +1 more source
Hadron-Induced Radiation Damage in Fast Heavy Inorganic Scintillators
Instruments, 2022 Fast and heavy inorganic scintillators with suitable radiation tolerance are required to face the challenges presented at future hadron colliders of high energy and intensity.
Chen Hu +9 more
doaj +1 more source
Energy Dynamics in the Brain: Contributions of Astrocytes to Metabolism and pH Homeostasis
Frontiers in Neuroscience, 2019 Regulation of metabolism is complex and involves enzymes and membrane transporters, which form networks to support energy dynamics. Lactate, as a metabolic intermediate from glucose or glycogen breakdown, appears to play a major role as additional ...
Joachim W. Deitmer +4 more
doaj +1 more source
Investigation of Alpha-Proton Drift Speeds in the Solar Wind: WIND and HELIOS Observations
Universe, 2022 In this paper, we present an analysis of how alpha–proton drift speeds (the difference between the magnitudes of alpha and bulk proton speeds) are constrained in the inner heliosphere using observations from the WIND and twin HELIOS spacecraft. The solar
Vamsee Krishna Jagarlamudi +6 more
doaj +1 more source