NMR studies of very dilute concentrations of 3He in solid 4He

ORAL

Abstract

We compare the results of recent measurements of the nuclear spin-lattice relaxation time ($T_1$) and nuclear spin-spin relaxation time ($T_2$) for very dilute concentrations of $^3$He ($16 \leq x_3 \leq 2000$ ppm) in solid $^4$He with results from previous studies in the temperature range where the relaxation is attributed to the quantum tunneling of $^3$He atoms in the $^4$He lattice. The comparison shows that the results cannot be explained in terms of a unique correlation time and the effects of $^4$He lattice are important.

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Authors

  • Sung Su Kim

    • Department of Physics and National High Magnetic Field Laboratory, University of Florida

  • C. Huan

    • Department of Physics and National High Magnetic Field Laboratory, University of Florida

  • L. Yin

    • Department of Physics and National High Magnetic Field Laboratory, University of Florida

  • J. Xia

    • Department of Physics and National High Magnetic Field Laboratory, University of Florida

  • D. Candela

    • Department of Physics, University of Massachusetts

  • N. S. Sullivan

    • Department of Physics and National High Magnetic Field Laboratory, University of Florida