Results 101 to 110 of about 144,387 (227)
Positron annihilation in methane gas
, 1970 The annihilation of positrons in methane gas at room temperature has been measured at pressures below 2 atm. The annihilation rate for the free positron component is proportional to the gas density and corresponds to an effective number of electrons per
D. A. L. Paul, P. M. Smith
core +1 more source
Nuclear excitation at the positron annihilation taking into account the radiative corrections [PDF]
Ядерна фізика та енергетика, 2006 The process of nuclear excitation at the positron-atomic electron annihilation was considered. The relative contribution nonradiative versus radiative was analysed.
S. N. Fedotkin, V. A. Zheltonozhskii
doaj
Unveiling atomic electron motion effects in e + e − high energy collisions at NA64
Journal of High Energy PhysicsAtomic electron motion is responsible for well-studied effects observed in low-energy (MeV-scale) processes. Recently, interest in this phenomenon has also emerged within the high-energy physics community, due to its potential to increase significantly ...
Fernando Arias-Aragón +2 more
doaj +1 more source
Positron annihilation - ICPA-13
, 2004 Proceedings of the 13th International Conference on Positron Annihilation, September ...
Hyodo, Toshio +3 more
core
Positron annihilation in gamma-ray bursts [PDF]
, 1990 Emission features appear at energies of 350 to 450 keV in the spectra of a number of gamma ray burst sources. These features were interpreted as electron-positron annihilation lines, redshifted by the gravitational field near the surface of a neutron ...
Harding, Alice K.
core
Investigation of the Ability to Detect Electrolyte Disorder Using PET with Positron Annihilation Lifetime Spectroscopy. [PDF]
J Phys Chem B, 2023 Zaleski R +4 more
europepmc +1 more source
Positron-electron Annihilation
, 1998 Animation of positron-electron annihilation Educational levels: Undergraduate lower division, Undergraduate upper division, Graduate or ...
David Leisawitz, Edgar Russell
core
Positron annihilation in metals [PDF]
, 1977 Positron annihilation in copper, silver and indium has been studied by means of the Doppler broadening method.High resolution germanium detectors have been used to observe the changes in the annihilation line profiles due to the trapping of positrons by ...
Hlaing, Tin
core
Study on Positron Annihilation Rate in Water
, 2008 Measurement system for determination of positron annihilation rate is consisted of HPGe detector, multichannel analyser and Na$^{22}$ positron source. The result of annihilation rate measurement in wetted filter paper is treated.
Tran Dai Nghiep
core +1 more source
Probing the Free Volume in Polymers by Means of Positron Annihilation Lifetime Spectroscopy. [PDF]
Polymers (Basel), 2023 Consolati G, Nichetti D, Quasso F.
europepmc +1 more source