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Time‐dependent density functional calculation of the energy loss of antiprotons colliding with metallic nanoshells
Author(s) -
Quijada M.,
Borisov A. G.,
Muiño R. Díez
Publication year - 2008
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200778157
Subject(s) - antiproton , nanoshell , jellium , collision , physics , path length , atomic physics , metal , density functional theory , mean free path , nuclear physics , molecular physics , chemistry , quantum mechanics , proton , nanoparticle , computer security , organic chemistry , computer science , electron
Time‐dependent density functional theory is used to study the interaction between antiprotons and metallic nanoshells. The ground state electronic properties of the nanoshell are obtained in the jellium approximation. The energy lost by the antiproton during the collision is calculated and compared to that suffered by antiprotons traveling in metal clusters. The resulting energy loss per unit path length of material in thin nanoshells is larger than the corresponding quantity for clusters. It is shown that the collision process can be interpreted as the antiproton crossing of two nearly bi‐dimensional independent metallic systems. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)