Phys. Rev. Lett. 20, 427–429 (1968)Collisional Damping of a Plasma EchoReceived 8 December 1967; published in the issue dated 26 February 1968 It is shown that the collisional damping on the free streaming motion of plasma can be very important in certain circumstances even though the collisional frequency is small compared with the plasma frequency. Both spatial and temporal echoes are treated in this note. In the latter case, for example, we found that the collisional damping goes as exp[-βωp2t3] (where β is the collisional frequency). © 1968 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.20.427
DOI:
10.1103/PhysRevLett.20.427
PACS:
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