Characteristics of a 4 K Gifford-McMahon cryocooler using the Gd2O2S regenerator material

被引：16

作者：

Masuyam, Shinji ^{[1
]}

Fukuda, Yusuke ^{[1
]}

Imazu, Takuya ^{[1
]}

Numazawa, Takenori ^{[2
]}

机构：

[1] Oshima Natl Coll Maritime Technol, Yamaguchi 7422193, Japan

[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050003, Japan

来源：

CRYOGENICS | 2011年 / 51卷 / 06期

关键词：

Ceramics; Magnetic; Gifford-McMahon; PULSE TUBE COOLER;

D O I：

10.1016/j.cryogenics.2010.06.008

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In order to improve the cooling power at 4.2 K. performance of a Gifford-McMahon cryocooler was investigated. We focus on regenerator materials and structure of 2nd stage regenerator. A ceramics regenerator of Gd2O2S (GOS) was used in the cold part of the 2nd stage regenerator. To utilize the GOS effectively, we applied a layered structure to the 2nd stage regenerator. It was divided into three parts along the length for the temperature distribution, to which lead (Pb), HoCu2 and GOS spheres were filled. The cooling power improved to 0.22 W at 4.2 K. The electric power consumption is 1.3 kW. When only Pb and HoCu2 (without the GOS) are filled, the cooling power is 0.15 W at 4.2 K. The experimental results show that GOS is very effective to increase the cooling power at 4.2 K. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：337 / 340

页数：4

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