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What force pulls electrons back during a plasma oscillation?
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plasma
Learn about the PHELIX (Petawatt High-Energy Laser for Heavy Ion Experiments) laser at the GSI Helmholtz Centre for Heavy Ion Research in Darmstadt, Germany. PHELIX is used for plasma and atomic physics research.
During a plasma oscillation, the restoring force that pulls electrons back toward their equilibrium position is the electric force (also referred to as electrostatic attraction).21
When electrons are displaced from their equilibrium position relative to the positive ions in a plasma, the resulting separation of charge creates an electrostatic attraction. This force acts to pull the electrons back, causing them to oscillate as a group about their original state. These collective movements are known as plasma oscillations, which were studied by Langmuir and Tonks.213