Results 31 to 40 of about 66,752 (296)
Atomic ionization at positron annihilation at β+-decay with taking into account screening [PDF]
Ядерна фізика та енергетика, 2012 The role of the nuclear charge screening and correctness of Born approximation for electron which is leaving atom in the process of atomic ionization at annihilation of positron with another electron of daughter's atom at β+-decay is studied. Processes
S. N. Fedotkin
doaj
On the Collision of Relativistic Shock Waves and the Large Scale Structure of the Universe
Universe, 2020 The solution to the problem of symmetric collision of two relativistic shock waves is given and limiting cases are investigated: Newtonian mechanics and ultrarelativistic mechanics. The results are correlated with the presence of known superclusters and "
Alexander Golubiatnikov +1 more
doaj +1 more source
Self-sustained annihilation of magnetic islands in helical plasmas [PDF]
, 2005 The evolution of the magnetic island which is induced by the resonant deformation by external currents in helical systems (such as the large helical device (LHD) [A. Iiyoshi, Phys. Plasmas 2, 2349 (1995)]) is analyzed. The defect of the bootstrap current,
Yagi, Masatoshi +5 more
core +1 more source
Calculation of Low-Energy Positron-Atom Scattering with Square-Integrable Wavefunctions
Atoms, 2022 The variational method is applied to the low-energy positron scattering and annihilation problem. The ultimate aim of the investigation is to find a computationally economical way of accounting for strong electron–positron correlations, including the ...
Sarah Gregg, Gleb Gribakin
doaj +1 more source
Positron annihilation spectroscopy in polymers
, 2022 S.219-223During the last decades positron annihilation has become a very powerful tool for the investigation of polymers. In particular, positron annihilation lifetime spectroscopy (PALS) yields valuable information on free volume and other properties ...
Günther-Schade, K. +5 more
core +1 more source
Triplet-triplet annihilation upconversion for calcium sensing [PDF]
, 2023 Triplet-triplet annihilation upconversion is a bimolecular process converting low-energy light into high-energy one. All available calcium probes, despite their qualities, are downconverting, which leads to the autofluorescence caused by background ...
Tingxiang, Yang +4 more
core +2 more sources
Stem Cell Research, 2022 Duchenne muscular dystrophy (DMD) is an X-linked recessive disorder with defect in dystrophin gene that shows features of degeneration of muscle tissue at an early age.
Istaq Ahmad +9 more
doaj +1 more source
Positronium Annihilation Lifetime Spectroscopy Study of SBA-15 [PDF]
, 2010 Positronium annihilation lifetime spectroscopy (PALS) is a technique used in the characterization of porosity in nanostructured materials. Positrons, the antiparticle to the electron, enter a sample and either immediately annihilate with an electron or ...
Tracy K. Steinbach, Steinbach, Tracy K
core
Advanced Engineering Materials, EarlyView.Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati +11 more
wiley +1 more source
Annihilation of positrons, emitted at β+-decay with electrons of the daughter's atom [PDF]
Ядерна фізика та енергетика, 2010 The processes of photon creation or atom ionization during annihilation of positron with other electron of daughter’s atom at β+-decay are considered.
S. M. Fedotkin
doaj