Artículo
Double differential distribution of electron emission in ionization of uracil in collisions with fast bare C-ions: angular asymmetry
Agnihotri, A. N.; Nandi, S.; Kasthurirangan, S.; Kumar, A.; Galassi, Mariel Elisa
; Rivarola, Roberto Daniel
; Champion, C.; Tribedi, L. C.
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
03/2013
Editorial:
American Physical Society
Revista:
Physical Review A: Atomic, Molecular And Optical Physics
ISSN:
1050-2947
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We report the energy and angular distribution of the electron emission from an RNA base molecule uracil in collisions with 3.5-MeV/u bare C ions. The absolute double differential cross sections (DDCS) are measured for emission energy between a few to 600 eV. The angular distributions are compared to those obtained for the O2 molecule in the same experiment. The single differential cross sections (SDCS) are also deduced. The energy and angular distributions of the DDCS and SDCS are compared with the state-of-the-art quantum-mechanical models based on continuum distorted wave-eikonal initial state (CDW-EIS) and correct boundary first Born (CB1) approximations which use a suitable molecular wave function for uracil. The models, however, give substantial deviations from the observed energy and angular distributions of the DDCS as well as SDCS. The CDW-EIS calculations are closer to the data compared to the CB1. In the case of uracil a large difference in the forward-backward emission of electrons was observed in comparison to that in collisions with an oxygen molecule.
Palabras clave:
Ionization
,
Uracil
,
Carbon Ions
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Identificadores
Colecciones
Articulos(IFIR)
Articulos de INST.DE FISICA DE ROSARIO (I)
Articulos de INST.DE FISICA DE ROSARIO (I)
Citación
Agnihotri, A. N.; Nandi, S.; Kasthurirangan, S.; Kumar, A.; Galassi, Mariel Elisa; et al.; Double differential distribution of electron emission in ionization of uracil in collisions with fast bare C-ions: angular asymmetry; American Physical Society; Physical Review A: Atomic, Molecular And Optical Physics; 87; 3; 3-2013; 032716-032716
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