26 citations · 45 across the 4 of their papers we have counts for
4 papers
Nonlinear and Hysteretic Ultrasound Propagation in Solid He: Dynamics of Dislocation Lines and Pinning Impurities
Izumi Iwasa, Harry Kojima
We report on the measurements of 9.6 MHz ultrasound propagation down to 15 mK in polycrystalline quantum solid He containing 0.3 and 20 ppm He impurities. The attenuation a…
Effects of He Impurity on Solid He Studied by Compound Torsional Oscillator
P. Gumann, M. C. Keiderling, D. Ruffner +1
Frequency shifts and dissipations of a compound torsional oscillator induced by solid He samples containing He impurity concentrations ( = 0.3, 3, 6, 12 and 25 in unit…
Spin Fluid Dynamics Observed by Magnetic Fountain Effect and Mechano-Spin Effect in the Ferromagnetic Superfluid He A Phase
Y. Aoki, A. Yamaguchi, K. Suzuki +2
Systematic observations of the magnetically generated fountain pressure in the superfluid He A have been carried out in a newly built apparatus designed to reduce the effec…
New Dissipation Relaxation Phenomenon in Oscillating Solid He-4
Y. Aoki, M. C. Keiderling, H. Kojima
We describe the first observations on the time-dependent dissipation when the drive level of a torsional oscillator containing solid He-4 is abruptly changed. The relaxation of dis…