Surface Waves on Superfluid 4He Under Reduced Gravity |
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Authors: | Takuya Takahashi Motoya Suzuki Ryuji Nomura Yuichi Okuda Koji Kamiya Takenori Numazawa Peter Shirron |
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Affiliation: | (1) Physics Department, Stanford University, Stanford, CA 94305, USA;(2) Micron Technology Inc, 3080 N. 1st St, San Jose, CA 95134, USA |
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Abstract: | Superfluid 4He was produced on a small jet plane for the first time using a small GM-refrigerator to condense the liquid and a scroll pump to get the superfluid by evaporation. The surface wave on superfluid under 0.5g E, 0.1g E and 0.05g E, together with 2g E and 1g E, was successfully examined by an optical method utilizing parabolic flight. Here, g E is the gravitational constant on the ground. Assuming that only the fundamental mode was excited as determined by the sample cell width, the resonance peak in the frequency domain was well reproduced by the gravity wave with corresponding gravity constant. |
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