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Stopping of Slow Projectiles in Electron Gas
Author(s) -
Moneta M.
Publication year - 1998
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/(sici)1521-3951(199804)206:2<675::aid-pssb675>3.0.co;2-3
Subject(s) - projectile , stopping power , atomic physics , ionization , electron , atomic number , degenerate energy levels , physics , ion , nuclear physics , quantum mechanics
New analytical formulas for the electronic stopping power and the energy loss straggling of low velocity extended charge projectiles in the degenerate electron gas are calculated within the dielectric function method. The stopping and straggling effective charges Z eff of a projectile were analysed. They are found to differ one from the other and to depend on the electron gas density r s , on the projectile atomic number Z i and on the projectile degree of ionization ζ. For small Z i , due to antiscreening Z eff > 1.