New Regenerator Material for Sub-4 K Cryocoolers

2002 ◽  
pp. 465-473 ◽  
Author(s):  
T. Numazawa ◽  
O. Arai ◽  
A. Sato ◽  
S. Fujimoto ◽  
T. Oodo ◽  
...  
Keyword(s):  
Regenerator Material

scholarly journals APPLICATION OF NOVEL REGENERATOR MATERIAL WITHIN A COAXIAL TWO-STAGE PULSE TUBE REFRIGERATOR

2008 ◽  
Author(s):  
T. Koettig ◽  
F. Richter ◽  
R. Nawrodt ◽  
A. Zimmer ◽  
C. Schwarz ◽  
...  
Keyword(s):  
Pulse Tube ◽  
Two Stage ◽  
Pulse Tube Refrigerator ◽  
Regenerator Material

Performance of a 260 Hz pulse tube cooler with metal fiber as the regenerator material

2014 ◽  
Author(s):  
Xiaotao Wang ◽  
Shuang Zhang ◽  
Guoyao Yu ◽  
Wei Dai ◽  
Ercang Luo
Keyword(s):  
Pulse Tube ◽  
Metal Fiber ◽  
Pulse Tube Cooler ◽  
Regenerator Material ◽  
Tube Cooler

scholarly journals A Compact SIS Receiver Cooled By 4 K GM Refrigerator

1994 ◽  
Vol 140 ◽  
pp. 113-114
Author(s):  
Toru Kuriyama ◽  
Hideo Hatakeyama ◽  
Masahiko Takahashi ◽  
Hideki Nakagome ◽  
Ryohei Kawabe ◽  
...  
Keyword(s):  
Liquid Helium ◽  
Schottky Diode ◽  
Sis Mixer ◽  
Sis Receiver ◽  
Regenerator Material ◽  
Higher Sensitivity

SIS receivers have higher sensitivity than Schottky diode receivers. The SIS mixer, however, must be cooled at 4 K level, and either a GM (Gifford-McMahon) + JT (Joule- Thomson) refrigerator or liquid helium is used. Therefore, SIS receivers are usually much larger and heavier than Schottky diode receivers which are usually cooled by a GM refrigerator only.Kuriyama et al. developed a GM refrigerator using Er3Ni as a regenerator material which achieved to cool at 4 K level.In this work, the SIS receiver was constructed and investigated, which was cooled below 4 K by the GM refrigerator with Er3Ni. It resulted in the SIS receiver which was about the same size and weight as a usual Schottky diode receiver.

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

Cryogenics ◽  
2011 ◽  
Vol 51 (6) ◽  
pp. 337-340 ◽  
Author(s):  
Shinji Masuyama ◽  
Yusuke Fukuda ◽  
Takuya Imazu ◽  
Takenori Numazawa
Keyword(s):  
Regenerator Material

4K-GM Cryocooler Performance and Thermal Conductivity of HoxEr1-xN

2013 ◽  
Vol 1492 ◽  
pp. 53-58
Author(s):  
Takanori Nakano ◽  
Yusuke Hirayama ◽  
Takushi Izawa ◽  
Takashi Nakagawa ◽  
Yasushi Fujimoto ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Stainless Steel ◽  
Electrical Resistivity ◽  
Thermal Diffusivity ◽  
Specific Heat ◽  
Three Samples ◽  
Regenerator Material

ABSTRACTHoxEr1-xN (x=0.25, 0.5, 0.75) samples were synthesized by nitriding of HoxEr1-x alloy bars and their thermal conductivity κ were measured. The measured κ values were comparable to those of stainless steel and Er3Ni. Ho0.5Er0.5N showed the highest κ of the present three samples. The thermal diffusivity calculated from the κ and the specific heat indicates that Ho0.5Er0.5N is a very promising regenerator material for the cryocoolers. The electrical resistivity ρ was also measured as a function of temperature.

scholarly journals Thermal and magnetic properties of regenerator material Gd2O2S

2017 ◽  
Vol 897 ◽  
pp. 012010 ◽  
Author(s):  
K Matsumoto ◽  
T Numazawa ◽  
Y Ura ◽  
T Ujiyama ◽  
S Abe
Keyword(s):  
Magnetic Properties ◽  
Regenerator Material

Performance improvement of a two-stage GM cryocooler by use of Er(Ni0.075Co0.925)2 magnetic regenerator material

Cryogenics ◽  
2002 ◽  
Vol 42 (10) ◽  
pp. 653-657 ◽  
Author(s):  
L Trevisani ◽  
T Kuriyama ◽  
F Negrini ◽  
T Okamura ◽  
Y Ohtani ◽  
...  
Keyword(s):  
Performance Improvement ◽  
Two Stage ◽  
Regenerator Material ◽  
Magnetic Regenerator
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