Formation of superfluid liquid pocket in aerogel and its solidification by cooling

Formation of superfluid liquid pocket in aerogel and its solidification by cooling

Matsuda, H. ; Ochi, A. ; Isozaki, R. ; Nomura, R. ; Okuda, Y.

Тема: Сверхтекучесть в низкоразмерных системах и в условиях ограниченной геометрии

Інший ID: PACS: 64.70.D–, 67.80.bf, 67.25.D–

URI: http://dspace.nbuv.gov.ua/handle/123456789/118749

Посилання: Formation of superfluid liquid pocket in aerogel and its solidification by cooling / H. Matsuda, A. Ochi, R. Isozaki, R. Nomura, Y. Okuda // Физика низких температур. — 2013. — Т. 39, № 9. — С. 1006–1011. — Бібліогр.: 34 назв. — англ.

Підтримка: This study was supported in part by the Global Center of Excellence Program at Tokyo Tech. “Nanoscience and Quantum Physics Project”, a Grant-in-Aid for Scientific Research (B) (Grant No. 21340095) from the Ministry of Education, Culture, Sports, Science and Technology of Japan and by a “Ground-based Research Announcement for Space Utilization” promoted by JAXA.

Дата: 2013

Завантажень: 443

Formation of superfluid liquid pocket in aerogel and its solidification by cooling

Анотація:

Formation of superfluid liquid pockets of ⁴He surrounded by ⁴He crystals were observed in an aerogel of 96% porosity. The liquid pockets did not crystallize by application of pressure but crystallized via avalanche by cool-ing below a particular temperature. The crystallization by cooling was also observed when crystals occupied a smaller portion of the aerogel. Driving force for the crystallization by cooling and possible mass transport process are discussed.

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