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          Institute: MPI für Dynamik und Selbstorganisation     Collection: Max-Planck-Fellow Zippelius     Display Documents



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ID: 633807.0, MPI für Dynamik und Selbstorganisation / Max-Planck-Fellow Zippelius
The geyser effect in the vacuum expansion of solid 3He0.544He0.46 and the determination of the Poisson ratio
Authors:Nieto, Pablo; Benedek, Giorgio; Toennies, Jan Peter
Language:English
Date of Publication (YYYY-MM-DD):2012-01-06
Title of Journal:New Journal of Physics
Journal Abbrev.:New J. Phys.
Volume:14
Sequence Number of Article:013007
Review Status:Peer-review
Audience:Experts Only
Abstract / Description: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 3He0.54 4He0.46 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.
Free Keywords:HCP <sup>4</sup>He; BCC <sup>3</sup>He; X-RAY; PLASTIC-DEFORMATION; ELASTIC-CONSTANTS; SOUND-PROPAGATION; HELIUM CRYSTALS; SINGLE-CRYSTALS; VACANCIES; TEMPERATURE
External Publication Status:published
Document Type:Article
Communicated by:Folkert Mueller-Hoissen
Affiliations:MPI für Dynamik und Selbstorganisation/Molekulare Wechselwirkung
External Affiliations:Univ Bochum, D-44801 Bochum, Germany
Univ Autonoma Madrid, Dept Fis Materia Condensada, E-28049 Madrid, Spain
Univ Milano Bicocca, Dipartimento Sci Mat, I-20125 Milan, Italy
DIPC, Donostia San Sebastian 20018, Spain
Identifiers:DOI:10.1088/1367-2630/14/1/013007
ISSN:1367-2630
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