Artículo
Coherent electron emission from O2 in collisions with fast electrons
Chowdhury, Madhusree Roy; Stia, Carlos Raul
; Tachino, Carmen Alejandra
; Fojon, Omar Ariel
; Rivarola, Roberto Daniel
; Tribedi, Lokesh C.
Fecha de publicación:
08/2017
Editorial:
Springer
Revista:
European Physical Journal D
ISSN:
1434-6060
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Abstract: Absolute double differential cross sections (DDCS) of secondary electrons emitted in ionization of O2 by fast electrons have been measured for different emission angles. Theoretical calculations of atomic DDCS were obtained using the first Born approximation with an asymptotic charge of ZT = 1. The measured molecular DDCS were divided by twice the theoretical atomic DDCS to detect the presence of interference effects which was the aim of the experiment. The experimental to theoretical DDCS ratios showed clear signature of first order interference oscillation for all emission angles. The ratios were fitted by a first order Cohen-Fano type model. The variation of the oscillation amplitudes as a function of the electron emission angle showed a parabolic behaviour which goes through a minimum at 90°. The single differential and total ionization cross sections have also been deduced, besides the KLL Auger cross sections. In order to make a comparative study, we have discussed these results along with our recent experimental data obtained for N2 molecule. Graphical abstract: [Figure not available: see fulltext.].
Palabras clave:
Atomic And Molecular Collisions
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Articulos(IFIR)
Articulos de INST.DE FISICA DE ROSARIO (I)
Articulos de INST.DE FISICA DE ROSARIO (I)
Citación
Chowdhury, Madhusree Roy; Stia, Carlos Raul; Tachino, Carmen Alejandra; Fojon, Omar Ariel; Rivarola, Roberto Daniel; et al.; Coherent electron emission from O2 in collisions with fast electrons; Springer; European Physical Journal D; 71; 8; 8-2017; 218-218
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