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Stopping power of atoms near metal surfaces at grazing incidence condition
Author(s) -
Kato M.,
Ohtsuki Y. H.
Publication year - 1986
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221330131
Subject(s) - atomic physics , projectile , electron , excitation , atom (system on chip) , electron exchange , stopping power , physics , hamiltonian (control theory) , atomic number , metal , fermi energy , chemistry , ion , nuclear physics , quantum mechanics , mathematical optimization , organic chemistry , computer science , embedded system , mathematics
The energy loss of slow atoms is studied from the viewpoint of the indirect excitation of low‐energy electron–hole pairs, i.e., the excitations of electron–hole pairs through the electron exchange process from the metal to the projectile's atomic states, and vice versa. For the slow atom, v ≪ v F ( v and v F are the velocity of the projectile and the Fermi velocity, respectively), electrons have enough velocity for response, thus the atomic states are not well defined due to the screening effect and the electron exchange processes. By constructing the model Hamiltonian which describes such effects from first principles the stopping power at grazing incidence condition, especially for the Cs surface, is calculated.