Abstract
The moments of the nuclear resonance absorption band of deuterium in partially oriented polymers can be obtained in the time domain from the quadrupolar echo, despite the strong distortion arising from the large quadrupolar coupling constant as compared with the finite width of the pulses and the receiver bandwidth. Using the experimental first moments, deduced from the polynomial fitting of the distorted echo, correction factors can be calculated which lead to 'corrected' second and fourth moments by a simple procedure. Such a procedure permits a systematic investigation of the absolute values of the second and fourth moments of the chain orientation function in partially oriented systems, especially semi-crystalline polymers.
Published Version
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