IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Secciones eficaces triplemente diferenciales para la doble fotoionizacion de atomos confinados en fullerenos
Autor/es:
F.D. COLAVECCHIA, J.M. RANDAZZO, G. GASANEO, AND D.M. MITNIK
Lugar:
Rio de Janeiro, Brasil
Reunión:
Simposio; IV Encontro Sul-Americano de colisoes inelasticas na materia; 2008
Resumen:
We study the double electronic emission by photon impact from He in the center of a spherical fullerene, which is modeled by a square-well shell. This system exhibits a manifold of avoided crossings as a function of the well depth, and present mirror colapses. However, this symmetry is broken in the triple differential cross section due to the delocalization of the He electrons in the initial state. Moreover, the fullerene potential involves higher angular momenta partial waves to be included in the process, which modifies the well-known two-lobe cross section from isolated He.