Results 31 to 40 of about 534,861 (299)

Electron Emission Cross Section from Methane under 250 keV Proton Impact

open access: yesAtoms, 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

open access: yesApplied 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

Neutrino emission due to Cooper pairing of protons in cooling neutron stars: Collective effects [PDF]

open access: yes, 2000
The process of neutrino-pair radiation due to formation and breaking of Cooper pairs of protons in superconducting cores of neutron stars is considered with taking into account of the electromagnetic coupling of protons to ambient electrons.
Amundsen   +11 more
core   +2 more sources

Describing the scattering of keV protons through graphene

open access: yesFrontiers 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

In Situ Observations of Blistering of a Metal Irradiated with 2-MeV Protons

open access: yesMetals, 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

Hadron-Induced Radiation Damage in Fast Heavy Inorganic Scintillators

open access: yesInstruments, 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

Investigation of Alpha-Proton Drift Speeds in the Solar Wind: WIND and HELIOS Observations

open access: yesUniverse, 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

Energy Dynamics in the Brain: Contributions of Astrocytes to Metabolism and pH Homeostasis

open access: yesFrontiers 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

Radiation induced defects of zinc oxide particles with star and flower shapes

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2022
The paper presents the results of modeling a proton beam with energies of 100 keV on zinc oxide particles, with star and flower shapes, in the Geant4 software package.
Dudin Andrey   +3 more
doaj   +1 more source

Heating the outer heliosphere by pickup protons [PDF]

open access: yes, 2004
There is a growing body of literature that demonstrates the ability of a turbulent cascade within the solar wind to heat the thermal protons. Several sources of energy are required to accomplish the observed heating.
Isenberg, Philip A.   +5 more
core   +2 more sources

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