Results 71 to 80 of about 245,057 (208)
A Positron Lifetime Study of Cooling and Natural Aging of Solutionized Aluminum Alloys
Advanced Engineering Materials, Volume 28, Issue 2, January 21, 2026.The process during cooling of Al–Mg and Al–Mg–Si alloys from the solutionizing temperature down to 20 °C is interrupted. These states are analyzed with positron lifetime spectroscopy to trace the processes during cooling. In different temperature ranges, two stages of vacancy loss and solute clustering are identified.
Zi Yang, Mengjie Li, John Banhart
wiley +1 more source
Journal of Applied Polymer Science, Volume 143, Issue 3, January 15, 2026.Dissolved hydrogen‐induced plasticization of polyamide 11 (PA11) detected as a decrease in flexural modulus (E f) using Cyclic Three‐Point Bending (Cyc‐3PB). ABSTRACT The effect of dissolved hydrogen on polyamide 11 (PA11) after decompression from a 90 MPa hydrogen gas environment was investigated. Structural analyses using wide‐angle X‐ray diffraction
Hiroaki Ono +6 more
wiley +1 more source
Hadronic footprint of GeV-mass dark matter
SciPost Physics, 2020 GeV-scale dark matter is an increasingly attractive target for direct detection, indirect detection, and collider searches. Its annihilation into hadronic final states produces a challenging zoo of light hadronic resonances. We update Herwig7 to study
Tilman Plehn, Peter Reimitz, Peter Richardson
doaj +1 more source
Advanced Materials, Volume 38, Issue 1, 2 January 2026.This review summarizes recent advances in metal‐based nanomaterials (MBNs) as multifunctional platforms for next‐generation diagnostics and nanodynamic therapies (NDTs), highlighting their structural tunability, diverse therapeutic modalities, and broad biomedical applications in oncology and infectious disease control.
Qihang Ding +11 more
wiley +1 more source
Fast high-resolution lifetime image reconstruction for positron lifetime tomography
Communications PhysicsDue to the ortho-positronium formed prior to the annihilation, the lifetime of a positron is sensitive to the tissue microenvironment and can potentially provide valuable information for monitoring disease progression and treatment response. However, the
Bangyan Huang +4 more
doaj +1 more source
A study of vacancy defects related to gray tracks in KTiOPO4 (KTP) using positron annihilation
AIP Advances, 2014 For the first time to our knowledge, positron annihilation spectroscopy (PAS) was used to study vacancy defects in KTiOPO4 (KTP) single crystals. Positron annihilation lifetime spectroscopy combined with dielectric measurements identified the existence ...
Yang Zhang +5 more
doaj +1 more source
Paradoxical Topological Soliton Lattice in Anisotropic Frustrated Chiral Magnets
Advanced Science, Volume 13, Issue 5, 27 January 2026.The article describes the discovery of a stable skyrmion‐antiskyrmion lattice (S‐AL) in anisotropic frustrated chiral magnets. This lattice has a net‐zero topological charge due to a balanced population of skyrmions and antiskyrmions. This is a paradoxical finding since these particles normally annihilate each other.
Sayan Banik +2 more
wiley +1 more source
First-principles calculation of positron states and annihilation parameters for group-III nitrides
, 2014 We calculated theoretically positron states and annihilation parameters for VGa-C complexes in GaN. Positron lifetimes and Doppler-broadening S–W parameters were evaluated.
S. Ishibashi, A. Uedono
semanticscholar +1 more source
Positron Annihilation Spectroscopy of Active Galactic Nuclei
Journal of Astronomy and Space Sciences, 2019 A regular and random components in the fluxes of quanta and particles from AGN is investigated. We consider the diffuse component and detect radiative feedback after the passage of cosmic rays and quanta through AGN.
Alexander V. Yushchenko +1 more
doaj +1 more source
Positron annihilation spectroscopy of defects in nuclear and irradiated materials- a review
, 2021 F. Selim
semanticscholar +1 more source