Results 41 to 50 of about 144,387 (227)
Advanced Science, EarlyView.The crystalline structure, the atomic numbers of the constituent elementsand the size of MOF crystals each influence their photoluminescence and scintillation properties in distinct ways. Together, these factors provide valuable guidelines for designing systems with optimized performance and tunable timing characteristics, arising from the synergistic ...
Francesca Cova +8 more
wiley +1 more source
Industrial Applications of Induced Positron Annihilation [PDF]
, 2004 This presentation discusses industrial applications of induced positron ...
Akers, D.
core
Radiationless and inelastic processes contribution to the nuclear excitation at the positron-atomic electron annihilation [PDF]
Ядерна фізика та енергетика, 2007 The process of nuclear excitation at the positron-atomic electron annihilation was considered. It is offered a new definition for the part of positrons, which excite nuclei at the annihilation.
S. N. Fedotkin, V. A. Zheltonozhskii
doaj
Positron Transport and Annihilation in the Galactic Bulge
Galaxies, 2018 The annihilation of positrons in the Milky Way Galaxy has been observed for ∼50 years; however, the production sites of these positrons remains hard to identify.
Fiona Helen Panther
doaj +1 more source
Charge‐Transfer‐Mediated Boron Magneto‐Ionics: Towards Voltage‐Driven Multi‐Ion Transport
Advanced Science, EarlyView.This study demonstrates voltage‐driven multi‐ion transport in FeBO systems, revealing simultaneous motion of B, Fe, and O ions enabled by charge‐transfer effects. By tuning oxidation states through oxygen incorporation, we achieve a transition from electrostatic‐like to electrochemical magneto‐ionic behavior. The findings establish boron magneto‐ionics,
Zheng Ma +15 more
wiley +1 more source
Distribution of positron annihilation radiation [PDF]
New Astronomy Reviews, 2006 The SPI instrument on-board the ESA/INTEGRAL satellite is engaged in a mission-long study of positron annihilation radiation from the Galaxy. Early results suggest that the disk component is only weakly detected at 511 keV by SPI. We review CGRO/OSSE, TGRS and SMM studies of 511 keV line and positronium continuum emission from the Galaxy in light of ...
openaire +2 more sources
Advanced Science, EarlyView.We demonstrate that microemulsion solvents can actively template molecular‐level pores within selective layer during interfacial polymerization. By creating localized quasi‐homogeneous polymerization zones, the membrane achieved a 7.1‐fold enhancement in water permeance with increased selectivity.
Feng Li +4 more
wiley +1 more source
Self‐Assembled Telecom Color Centers in Silicon and Their Growth Environment
Advanced Physics Research, EarlyView.Influence of the growth pressure during the formation of self‐assembled color centers in silicon grown by molecular beam epitaxy at ultra‐low temperatures on the color center's photoluminescence spectral signature. The growth pressure crucially determines color center selectivity, as evidenced by G‐centers, W‐centers, and T‐centers, matrix purity, and ...
Jacqueline Marböck +9 more
wiley +1 more source
Positron annihilation studies of materials
, 2012 Positron annihilation provides sensitive and versatile probe techniques in materials science that can characterize electronic structure and vacancy-type, open volume, defects. The techniques utilize the information carried by the photons that result from
Wurschum, R. +3 more
core +1 more source
Distribution of Positron Annihilation Lifetime Components
مجلة بغداد للعلوم, 2008 The intensities of the positron annihilation lifetime components are shown to be related to the free volume model, and the theoretical value of the ratio between the singlet to the triplet state intensities, described by the ratio η, is shown to follow ...
Ahmed Abdul-Razzaq Selman +1 more
doaj +1 more source