Results 81 to 90 of about 119,970 (362)
Supernovae and positron annihilation radiation [PDF]
New Astronomy Reviews, 2002 7 pages, accepted for publication in New Astronomy Reviews (Astronomy with Radioactivites III)
Leising, Mark D +3 more
openaire +3 more sources
Advanced Functional Materials, EarlyView.Phosphorescent OLEDs suffer from efficiency roll‐off due to triplet‐polaron quenching (TPQ). This study demonstrates for a large set of host‐guest combinations a spectroelectrochemical method to measure the absorption of charged molecules, enabling determining TPQ Förster radii (2.5–4 nm) from the spectral overlap.
Stan E. A. Jaspars +5 more
wiley +1 more source
Positron-Hydrogen Scattering, Annihilation, and Positronium Formation
Atoms, 2016 In previous papers (Bhatia A.K. 2007, 2012) a hybrid theory for the scattering of electrons from a hydrogenic system was developed and applied to calculate scattering phase shifts, Feshbach resonances, and photoabsorption processes.
Anand K. Bhatia
doaj +1 more source
Search for right-handed neutrinos from dark matter annihilation with gamma-rays [PDF]
, 2017 Several extensions of the Standard Model contain right-handed (sterile) neutrinos in the GeV-TeV mass range. Due to their mixing with the active neutrinos, they may give rise to novel effects in cosmology, neutrino physics, and collider searches.
M. Campos +3 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.Metal‐tetracene dimeric complexes are synthesized through the pyridyl coordination to either Pt(II) or Pd(II). Photophysical properties are systematically compared as a function of the metal using steady‐state and time‐resolved spectroscopy. The Pt(II) dimer exhibits efficient intramolecular singlet fission and subsequent intramolecular up‐conversion ...
Yifan Bo +4 more
wiley +1 more source
Sebuah Analisis Terhadap Problematika Ajaran Restorasi Berkaitan Dengan Konsep Bumi Baru
Dunamis: Jurnal Teologi dan Pendidikan Kristiani, 2018 Abstraks. The second coming of Christ is an event inalienable to mankind. In addition to declaring punishment for unbelievers, His second coming also fulfils the presence of a new heaven and earth in which the righteous will reign with Christ forever. Of
Yudi Jatmiko
doaj +1 more source
Identification and Reversible Optical Switching of NV+ Centers in Diamond
Advanced Functional Materials, EarlyView.NV+ centers in diamond are predicted to coexist with NV0 and NV– centers, but direct experimental confirmation remains challenging. Using positron annihilation spectroscopy with in situ light illumination, a charge transition NV+/0 is observed at 1.234(8) eV.
Marcel Dickmann +13 more
wiley +1 more source
Reflections of the West in Gu Cheng’s Life and Poems
Asian Studies, 2012 Gu Cheng (1957–1993), a prominent member of the “Misty Poets”, lived the last part of his life in the West as he was exiled in 1989. So he stayed abroad separeted from his country and people and unable to cope with the western world.
Anna Simona MARGARITO
doaj +1 more source
Compositing Effect Leads to Extraordinary Performance in GeSe‐Based Thermoelectrics
Advanced Functional Materials, EarlyView.Rhombohedral GeSe is rationally designed with (GeSe)0.9(AgBiTe2)0.1‐1.5 mol.% SnSe, achieving a peak ZT of 1.31 at 623 K. Forming a composite with SnSe establishes interfaces with strong phonon scattering and weak electron scattering. Multiscale defects lead to an ultra‐low lattice thermal conductivity (0.26 W m−1 K−1), approaching the amorphous limit.
Min Zhang +14 more
wiley +1 more source
Физика волновых процессов и радиотехнические системы, 2014 The reasons of angular photon distribution occurrence at electron-positron annihilation are considered. It is shown, that angular photon distribution is consequence of Dopplers effect in the reference frame of the electron and positron mass center.
A.N. Volobuev, T.A. Antipova
doaj