Ultrasound study of the mass decoupling of 4He inert films on mesoporous silica

• Junko, Taniguchi

• Hideyuki, Ichida

• Masaru, Suzuki

Bibliographic Information

Other Title

• Ultrasound study of the mass decoupling of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>He</mml:mi><mml:mprescripts /><mml:none /><mml:mn>4</mml:mn></mml:mmultiscripts></mml:math> inert films on mesoporous silica

Abstract

We performed ultrasound measurements for 4He films adsorbed on a mesoporous silica. We observed a large decrease in sound velocity with increasing temperature, accompanied by an attenuation peak. The observed dependence of the sound velocity on temperature is well explained by a thermally activated relaxation process. The magnitude of the change in sound velocity is comparable to that due to the total mass loading of 4He, suggesting that the mass decoupling occurs at low temperature.

source:https://doi.org/10.1103/PhysRevB.99.024112

Journal

• Physical Review B

  Physical Review B 99 (2), 024112-, 2019-01-29

  American Physical Society (APS)

Details

• CRID: 1050564289152457216
• NII Article ID: 120006725294
• ISSN: 24699950
• ISSN: 24699969
• DOI: 10.1103/physrevb.99.024112
• Web Site: http://id.nii.ac.jp/1438/00009285/
• Web Site: https://link.aps.org/article/10.1103/PhysRevB.99.024112
• Web Site: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.99.024112/fulltext
• Text Lang: en
• Article Type: journal article
• Data Source:
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  • KAKEN