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Two types of interaction have been observed between two adjacent expanding plasmas, produced by laser irradiation. The density and temperature of both the initial and interacting plasmas have been measured, by photon scattering For interaction early in the expansion the results can be explained by classical ion-ion collisions, while for later interaction (lower density) electron-electron and electron-ion collisions provide an explanation.
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Rumsby et al. (1974) studied this question.
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