Abstract
We report measurements of nuclear spin-lattice relaxation and dynamic polarization of protons in ethyleneglycol-alcohol mixtures at 9 kG and 4·2 K and 1·3 K. Comparison of experimental results with a proposed model of spin-lattice relaxation indicates that the role of dipolar and exchange reservoirs of paramagnetic ions in nuclear relaxation is not necessarily negligible, particularly in the presence of high concentration of paramagnetic impurities. The influence of methanol is to enhance the dynamic polarization of protons compared to pure ethyleneglycol, in the most favourable cases by almost 50% in our experimental conditions.
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Mango S., Runolfson Ö., Borghini M., Nucl. Instr. Meth.72 (1969), 45.
Glättli H., Odehnal M., Ezratty M., Malinovski A., Abragam A., Phys. Lett.29A (1969), 250.
Williams W. G.,Thomas J. L., Rutheford Laboratory Report RHEL/R 213 (1971).
Proc. 2nd Intern. Conf. Polar. Targets, Berkely (1971).
Borghini M., Niinikoski T. O., Udo F., Weymuth P., Nucl. Instr. Meth.105 (1972), 215.
Svoboda J., Odehnal M., Phys. Lett.41A (1972), 241.
Provotorov B. N., Zh. Exp. Teor. Fiz.41 (1961), 1582.
Phillipot J., Phys. Rev.133A (1964), 471.
Redfield A. G., Phys. Rev.98 (1955), 1787.
Schumacher R. T., Phys. Rev.112 (1958), 837.
Buishvili L. L., Zh. Exp. Teor. Fiz.49 (1965), 1868.
Khutshishvili G. R., Usp. Fiz. Nauk96 (1968), 441.
Van den Heuvel G. M., Swanenburg T. J. B., Poulis N. J., Physica56 (1971), 365.
Jeffries C. D., Proc. Phys. Soc.88 (1966), 257.
Melikiya M. G., Fiz. Tverd. Tela10 (1968), 858.
Buishvili L. L., Khutshishvili G. R., Zviadadze M. D., Phys. Stat. Sol. (b)48 (1971), 851.
Cox S. F. J., Gill J. C., Wharmby D. O., J. Phys. C: Solid St. Phys.4 (1971), 371.
Garifyanov N. S., Kozyrev B. M., Fedotov V. N., Dokl. Akad. Nauk SSSR178 (1968), 808.
Bontchev P. R., Malinovski A., Mitewa M., Kabassanov K., Inorg. Chim. Acta6 (1972), 499.
Glättli H., In Proc. 2nd Internat. Conf. Polar. Targets, Berkeley (1971).
Odehnal M., Bouffard V., J. Physique32 (1971), 699.
Atsarkin V. A.,Budkovskiy P. E.,Vasneva G. A.,Demidov V. V.,Novikov E. A.,Ryabushkin O. A.,Funtikov Yu. V., 17th Coll. Ampère, Turku (1972).
Warren R. W., Feldman D. W., Castle I. G., Phys. Rev.136 (1964), A 1347.
Ross R. T., J. Chem. Phys.42 (1965), 3919.
Abragam A., Borghini M., Progr. Low Temp. Phys.IV (1964), 384.
Goldman M., Spin Temperature in Solids, Oxford University Press (1970).
Borghini M., In Proc. 2nd Internat. Conf. Polar. Targets, Berkeley (1971).
Kozhusner M. A., Zh. Exper. Teor. Fiz.56 (1969), 246.
Borghini M., Scheffler K., Phys. Rev. Lett.26 (1971), 1362.
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The authors are grateful to B.Drbohlav for technical assistance. They also wish to express their thanks to Dr. V. A.Atsarkin for sending them a copy of his paper prior to publication.
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Svoboda, J., Odehnal, M. Spin-lattice relaxation and dynamic polarization of protons in ethyleneglycol-methanol samples. Czech J Phys 24, 93–106 (1974). https://doi.org/10.1007/BF01596449
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DOI: https://doi.org/10.1007/BF01596449