Dynamical polarization of protons in some polymers using the solid effect method

Experimental results on the dynamical polarization of protons in various polymers irradiated by neutrons are recapitulated. The measurements were performed at liquid nitrogen temperatures. The dependence was investigated of the degree of polarization on the microwave power, on the irradiation dose and on the change in frequency of the nuclear magnetic resonance. The maximum enhancement of polarization was obtained for polyethylene of a density 0·95 g/cm³ and was equal to 30.

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SOLID EFFECT

. . , . , 30, 0,95 g/cm³.

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In conclusion we thank R. Tichý for assistance in the measurements and S. Roda for help in the construction of the apparatus.