Title: Attractive potential around a thermionically emitting microparticle
Authors: Delzanno, GL ×
Lapenta, Giovanni
Rosenberg, M #
Issue Date: 2004
Publisher: American physical soc
Series Title: Physical review letters vol:92 issue:3 pages:-
Abstract: We present a simulation study of the charging of a dust grain immersed in a plasma, considering the effect of thermionic electron emission from the grain. It is shown that the orbit motion limited theory is no longer reliable when electron emission becomes large: screening can no longer be treated within the Debye-Huckel approach and an attractive potential well can form, leading to the possibility of attractive forces on other grains with the same polarity. We suggest to perform laboratory experiments where emitting dust grains could be used to create nonconventional dust crystals or macromolecules.
ISSN: 0031-9007
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Plasma-astrophysics Section
× corresponding author
# (joint) last author

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