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Solitary potentials in cometary dusty plasmas
Author(s) -
Mamun A. A.,
Shukla P. K.
Publication year - 2002
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2002gl015219
Subject(s) - dusty plasma , plasma , physics , polarity (international relations) , amplitude , trapping , astrophysics , atomic physics , chemistry , optics , quantum mechanics , ecology , biochemistry , biology , cell
Recent observations reveal that plasmas in cometary tails contain charged dust grains of positive and negative polarities. Our objective here is to show that such a two‐component dusty plasma supports dust‐Langmuir and dust‐acoustic waves. The latter in the nonlinear regime propagate in the form of localized negative potentials. The role of large amplitude potential structures for trapping the positive dust grains and for the formation of dust layers of opposite polarity is discussed.