Two-particle emission from LiF(1 0 0) upon photon, electron and positron excitation
MetadataShow full item record
Electron pairs simultaneously emitted from a solid surface upon excitation with photons (double photoemission or (?, 2e)) or electrons (e,2e) provide information about the electron correlation in the solid which is mediated by exchange and Coulomb interactions. Without the Pauli restriction, the correlation of a positron with many electrons in a solid is dominated by Coulomb interactions. We have therefore undertaken the first comparative study of electron-electron and positron-electron pair emission upon impact with low energy photons, electrons and positrons. The target surface chosen for this study was LiF(1 0 0), a wide band gap dielectric that allows for a simple kinematical interpretation of the energy distribution of emitted pairs. We present the first results and discuss insights into the mechanisms of pair emission upon positron, electron and photon impact. © 2009 IOP Publishing Ltd.
Showing items related by title, author, creator and subject.
Al Moudi, Mansour Z. (2014)This thesis investigates the diagnostic value of cardiac positron emission tomography when compared to single photon emission computed tomography for detection of coronary artery disease. This prospective study involves ...
Synergistic interactions of plasticizers and nanoclays in hydrophilic starch based bionanocompositesLiu, HuiHua (2011)Depletion of non-renewable resources and exorbitant levels of carbon dioxide emissions have questioned the further usage of traditional plastics. The imbalance in global sustainability has necessitated the development and ...
Electrochemically assisted photocatalytic degradation of 4-chlorophenol by ZnFe<inf>2</inf>O<inf>4</inf>-modified TiO<inf>2</inf> nanotube array electrode under visible light irradiationHou, Y.; Li, Xin Yong; Zhao, Q.; Quan, X.; Chen, G. (2010)A well-aligned ZnFe2O4/TiO2 composite nanotube array (ZnFe2O4/TiO2-NTs) electrode with visible-light activity was successfully prepared using a two-step electrochemical process of anodization and a novel cathodic ...