The geyser effect in the vacuum expansion of solid 3He0.544He0.46 and the determination of the Poisson ratio

Details The geyser effect in the vacuum expansion of solid 3He0.544He0.46 and the determination of the Poisson ratio The geyser effect in the vacuum expansion of solid 3He0.544He0.46 and the determination of the Poisson ratio

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012njph...14a3007n&link_type=abstract

New Journal of Physics, Volume 14, Issue 1, pp. 013007 (2012).

Physics

Scientific paper

Periodic bursts, also called the geyser effect, previously observed in the vacuum expansion of pure and <1% 3He-doped solid 4He, are shown to occur also in solid 3He-4He alloys. Results are reported for 3He0.544He0.46 for the temperature range of 1.73-2.13 K and pressures up to 92 bar, and then compared with the results for pure solid 4He. The geyser period is found to increase with pressure much faster in the mixed solid than in pure solid 4He. A direct measurement of the internal pressure exerted on the lateral walls of the source chamber provides the first information on the Poisson ratio of polycrystalline pure and mixed solids.

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