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Type: Artigo de periódico
Title: Positron annihilation in triphenylphosphine oxide complexes: Positronium inhibition mechanism involving excitation of charge transfer states
Author: Faustino, WM
de Sa, GF
Malta, OL
Magalhaes, WF
Machado, JC
Abstract: Positronium formation in triphenylphosphine oxide and its lanthanide and hydrogen peroxide complexes have been characterized. The low probability of positronium formation observed has been attributed to a mechanism involving competition between charge transfer at large distances induced by the positron-molecular electron interaction and positronium formation during positron molecule scattering. The molecular site responsible for positronium formation has been identified. (c) 2008 Elsevier B.V. All rights reserved.
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.cplett.2007.12.060
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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