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VOLUME 32 (1980) | ISSUE 6 | PAGE 405
Mechanisms for formation of a radio-frequency echo in powders
Two new, nonlinear mechanisms for formation of a radio-frequency echo in different powders, which readily explain the nature and the main properties of the "dynamic" echo and of the "holographic" recording, are proposed. A new effect— a phase modulation of the echo decay with time—is theoretically predicted for the first time.