INTEC 05402
INSTITUTO DE DESARROLLO TECNOLOGICO PARA LA INDUSTRIA QUIMICA
Unidad Ejecutora - UE
artículos
Título:
Experimental and Theoretical Study of Hydrogen Scattering from a Graphite Surface.
Autor/es:
F. BONETTO; E. A. GARCÍA; R. VIDAL; J. FERRÓN; E.C.GOLDBERG
Revista:
APPLIED SURFACE SCIENCE
Editorial:
Elsevier
Referencias:
Año: 2007 vol. 254 p. 62 - 64
ISSN:
0169-4332
Resumen:
Ion scattering spectrometry (ISS) with time of flight (TOF) analysis is employed to measure the ion fraction of positively charged hydrogen (H+) projectiles scattered from a well characterized Highly Oriented Pyrolitc Graphite (HOPG) surface at a 45o scattering angle, various ingoing/outgoing angles and two different incoming energies (4 keV and 5 keV). In the theoretical approach, the negative ionization probability is calculated by employing a Green´s function formalism to solve the dynamic collisional process. Both theoretical and experimental results are analyzed and contrasted. The theoretical negative ion fraction evolution during the collisional process is described in detail.
