N.S. Shiren, Y. Tomkiewicz, et al.
Solid State Communications
Paper
Dynamic polarization echoes in powders
Abstract
Piezoelectric powders excited by two or more rf pulses are found to exhibit echoes characteristic of anharmonic oscillators. At high rf powers, the echoes show complex dependence upon the pulse separation, power, and widths. © 1976 The American Physical Society.
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