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|Type:||Artigo de periódico|
|Title:||Pressure-induced physical changes of noble gases implanted in highly stressed amorphous carbon films|
dos Santos, MC
|Abstract:||Noble gases (Ar, Kr, and Xe) were trapped in an amorphous carbon matrix in the 1-11-GPa pressure range. Extended and near-edge x-ray-absorption spectroscopies indicate clustering of noble gases induced by the host matrix internal pressure. Simultaneously, the matrix pressure promotes a shift of the noble-gas core-level binding energy of similar to1 eV. The Auger parameter reveals that both the initial state and the host relaxation terms contribute to the binding-energy shift. Ab initio calculations performed on an Ar-7 cluster and on Ar atoms clustered in aromatic molecules support the experimental findings.|
|Editor:||American Physical Soc|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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