A separate two-stage pulse tube cooler working at liquid helium temperature

来源 :中国科学通报:英文版 | 被引量 : 0次 | 上传用户:doublexiu
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
A novel 4 K separate two-stage pulse tube cooler (PTC) was designed and tested. The cooler consists of two separate pulse tube coolers, in which the cold end of the first stage regenerator is thermally connected with the middle part of the second regenera
其他文献
该著聚焦于奥古斯丁的心灵学说,考察他对恶的定义如何适用于作为实体的心灵。在奥古斯丁看来,善好与存在等同,所有善好之物也就是任何存在者都具备这样三个规定:凡所有存在的
分发和在在沙上使用盐的地下水的不同灌溉方法和管理下面的土壤潮湿和盐的动态变化上的学习 Taklimakan 沙漠的内地登陆,在 1997 开始了。结果显示出那滴下灌溉能被用于幼苗(
The resistance-temperature properties of porous (Ba, Pb)TiO3 semiconductor ceramic were systematically studied. It was found that the resistance of (Ba, Pb)TiO3
Type 1 diabetes is the result of a selective destruction of insulin-producing β cells in pancreatic islets by autoreactive T cells. Depletion of autoreactive T
Monitoring the atmospheric ozone is one of the key projects in the atmospheric and environmental sciences, and the decrease of ozone in stratosphere has aroused
The photoelectrochemical properties of the quasi-solid-state dye-sensitized solar cells based on polymer electrolytes consisting of polyethylene oxide (PEO) wit
With biological and economic importance,threshold traits are discrete in phenotype but have the same polygenic genetic basis as quantitative traits. The traditi
The composite material of poly-(L-lactide) (PLLA) and carbon nanotubes (CNTs) were prepared. Its surface morphologies and property were worked out by using atom
By the analyses of Guliya ice core on the Tibetan Plateau, it was found that the calcium (Ca^2+) originated from the terrestrial source is the main cation of so
Phenylalanine-58 is one of the conservative residues in the hydrophobic pocket of Cyt bs, which forms aromatic stacking with the heme b. Previous study showed t