零重力下生长氦晶体获得成功

Japanese physicists grow helium crystals in zero gravity

最近，日本物理学家在研究零重力条件下晶体生长的过程中，突破了实验室条件限制．在飞机上用氦-4超流液生成了长达10毫米的氦晶体．检验了氦晶体在更宽广条件下生长的特殊动力学．这是普通材料无法实现的。相关论文发表在当日的《新物理学杂志》上。该氦晶体是利用高压，在06K（约零下272℃）的极低温度下．以超流液泼溅的方式生长出来。超流液是一种量子态物质．其性质像液体但黏度为零，所以在高压下也能畅通无阻。超流液能流过极微小的缝隙而没有任何摩擦阻力。

Helium crystals are grown under zero gravity conditions by a team of Japanese physicists with the help of a phenomenon called parabolic flight. A team of Japanese physicists have grown helium crystals in zero gravity conditions. The experiments took place in a small jet under parabolic flight conditions. During parabolic flight, zero gravity was achieved for a duration of 20 seconds. During the two-hour flight, approximately eight experiments were conducted.