Matsuda, H.; Ochi, A.; Isozaki, R.; Nomura, R.; Okuda, Y.
(Физика низких температур, 2013)
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 ...