IAFE 05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
artículos
Título:
Production of excitons in grazing collisions of protons with LiF surfaces: An onion model
Autor/es:
J. E. MIRAGLIA; M. S. GRAVIELLE
Revista:
PHYSICAL REVIEW A - ATOMIC, MOLECULAR AND OPTICAL PHYSICS
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2011 vol. 84 p. 629011 - 629011
ISSN:
1050-2947
Resumen:
Inthisworkweevaluatetheproductionofexcitonsofalithiumfuoridecrystalinducedbyprotonimpactintheintermediateandhighenergyregime(from100keVto1MeV).AsimplemodelisproposedtoaccountfortheinfluencoftheCoulombgridofthetargetbydressingcrystalionstotransformtheminwhatwecallonions.Theexcitedstatesoftheseonionscanbeinterpretedasexcitons.Withinthismodel,totalcrosssectionandstoppingpowerarecalculatedbyusingthefrstBornandthecontinuumdistorted-wave(CDW)eikonalinitial-tate(EIS)approximations.Wefoundthatbetween7and30excitonsperincidentprotonareproducedingrazingcollisionswithLiFsurfaces,becomingarelevantmechanismofinelastictransitions.
