Open AccessPlasma oscillations in porous samples
Author(s) -
Yuri Kornyushin
Publication year - 2004
Publication title -
science of sintering/science of sintering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.309
H-Index - 25
eISSN - 1820-7413
pISSN - 0350-820X
DOI - 10.2298/sos0401043k
Subject(s) - oscillation (cell signaling) , plasma oscillation , dipole , porosity , materials science , electron , condensed matter physics , slab , plasma , physics , composite material , chemistry , biochemistry , quantum mechanics , geophysics
The influence of the shape of a sample on the type of uniform dipole collective electrons oscillations is discussed. In samples of a bulk shape uniform bulk dipole oscillations cannot exist. They exist in samples of a thin slab shape only. However in essentially porous materials the electrostatic energy of the oscillation in a sample is considerably larger thus leading to stronger restoring force and higher frequency of the oscillation. When this frequency exceeds the Langmuir frequency, the oscillation becomes of a bulk type.