回熱材料Gd2O2S 在液氦溫區高頻脈管制冷機的實驗研究
李曉永，全加，劉彥杰，蔡京輝，葉榮昌
1. 中國科學院理化技術研究所；
2. 中國科學院大學；
3. 北京科技大學
EXPERIMENT STUDY ON REGENERATOR MATERIALS OF Gd2O2S IN HIGH FREQUENCY PULSE TUBE CRYOCOOLER WORKING AT LIQUID HELIUM TEMPERATURE
LI Xiao-yong，QUAN Jia，LIU Yan-jie，CAI Jing-hui，YE Rong-chang
1. Technical Institute of Physics and Chemistry，CAS；
2. Graduate University of Chinese Academy of Sciences；
3. University of Science and Technology Beijing

摘要：液氦溫區高頻脈沖管制冷機具有體積功耗小、質量輕、低振動等優點，因此在太赫茲通信、深空探測和空間科學實驗等方面的應用具有獨特的優勢，是國內外深低溫機械式制冷機的研究熱點。而低溫回熱材料的性能是制約深低溫制冷機發展的關鍵因素。利用實驗室自主設計的液氦溫區兩級脈沖管制冷機及北京科技大學提供的Gd2O2S（GOS）材料，從填充長度等方面，對回熱材料在液氦溫區高頻脈沖管制冷機的應用進行了實驗研究。實驗結果表明，在目前工況下，回熱材料HoCu2的實驗效果是優于GOS，并對此做出了分析和解釋。

關鍵詞：液氦溫區,  回熱材料,  GOS    
Abstract：The high frequency pulse tube cryocooler which can achieve 4.2 K（liquid helium temperature）has the advantage of low electromagnetic，light weight and small volume. It would be used in the field of THz communication，deep space exploration and space science experiments. At the same time，it is a hot research area in mechanical cryogenic refrigerator. The performance of regenerator materials has a vital influence on the development of cryogenic efrigerator. Based on the two-stage pulse tube cryocooler working at liquid helium temperature which is a independent self-design in our laboratory and the regenerator materials of Gd2O2S provided by University of Science and Technology Beijing，the paper shows a series of experiment studies which focus on the regenerator materials of GOS. The result of experiments points out that the regenerator materials of HoCu2 is better than GOS under current conditions. And the phenomenon is specifically discussed in the paper.

Key words： liquid helium temperature    regenerative materials    GOS
    
作者簡介: 李曉永（1989-），男，河南安陽人，碩士研究生，主要從事液氦溫區制冷機研究工作

引用本文: 李曉永，全加，劉彥杰，蔡京輝，葉榮昌. 回熱材料Gd2O2S 在液氦溫區高頻脈管制冷機的實驗研究[J]. 真空與低溫, 2017, 23(3): 158-.
LI Xiao-yong，QUAN Jia，LIU Yan-jie，CAI Jing-hui，YE Rong-chang. EXPERIMENT STUDY ON REGENERATOR MATERIALS OF Gd2O2S IN HIGH FREQUENCY PULSE TUBE CRYOCOOLER WORKING AT LIQUID HELIUM TEMPERATURE. journal1, 2017, 23(3): 158-.

文章來源：《真空與低溫》雜志2017年23卷3期

刊出日期：2017-06-28

鏈接地址：http://www.lipcast.cn:81/zkydw/CN/abstract/abstract140.shtml