Results 21 to 30 of about 144,387 (227)
Testing entanglement of annihilation photons
Scientific Reports, 2023 We present a new experimental study of the quantum entanglement of photon pairs produced in positron-electron annihilation at rest. Each annihilation photon has an energy that is five orders of magnitude higher than the energy of photons in optical ...
Alexander Ivashkin +7 more
doaj +1 more source
Investigations of positron annihilation radiation [PDF]
AIP Conference Proceedings, 2000 10 pages, to appear in "Proceedings of the 5th COMPTON Symposium"
Milne, P. A. +4 more
openaire +2 more sources
Resonant positron annihilation in ammonia [PDF]
, 2010 Positron annihilation in ammonia is analyzed using the framework of resonant annihilation [G. F. Gribakin and C. M. R. Lee, Phys. Rev. Lett. 97, 193201 (2006)].
Gribakin, G. F.; id_orcid
core +2 more sources
Hunting for Glueballs in Electron-Positron Annihilation [PDF]
Physical Review Letters, 2003 4 pages, 1 figure, version published in Phys.
Brodsky, Stanley +2 more
openaire +3 more sources
Positron annihilation technique in hydrogen storage materials [PDF]
, 2021 The feasibility of using the positron annihilation methods is discussed. Two main methods of electron positron annihilation - positron annihilation lifetime spectroscopy and coincidence Doppler broadening are used to characterize the materials - hydrogen
Medic, Zarko
core
Positron Annihilation in Chloropolystyrenes [PDF]
, 1993 Results of angular correlation of annihilation radiation and positron annihilation lifetime measurements are presented for atactic polystyrene and chloropolystyrenes.
Rudzińska-Girulska, J. +5 more
core +1 more source
Positron scattering and annihilation in hydrogenlike ions [PDF]
, 2013 Diagrammatic many-body theory is used to calculate the scattering phase shifts, normalized annihilation rates Zeff, and annihilation ? spectra for positron collisions with the hydrogenlike ions He+, Li2+, B4+, and F8+.
G F Gribakin +3 more
core +1 more source
Possible extragalactic positron annihilation signal
Astronomy & AstrophysicsContext. With 20 years of INTEGRAL/SPI observations, the most detailed map of the positron annihilation line at 511 keV was created. While the central bulge and extended disk are readily recognised in this map, several hotspots at high latitude regions ...
Siegert Thomas, Yoneda Hiroki
doaj +1 more source
Positron annihilation in boron nitride
Condensed Matter Physics, 2006 Electron and positron charge densities are calculated as a function of position in the unit cell for boron nitride. Wave functions are derived from pseudopotential band structure calculations and the independent particle approximation (IPM), respectively,
N.Amrane
doaj +1 more source
Ultrashort, MeV-scale laser-plasma positron source for positron annihilation lifetime spectroscopy
Physical Review Accelerators and Beams, 2021 Submicron defects represent a well-known fundamental problem in manufacturing since they can significantly affect performance and lifetime of virtually any high-value component. Positron annihilation lifetime spectroscopy is arguably the only established
Thomas L. Audet +12 more
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