Open AccessDesign and performance of closed cycle sample cooling stage for angle resolved photoemission spectroscopy capable of reaching temperatures below 2 K
Author(s) -
Benjamin Schrunk,
Lunan Huang,
Yun Wu,
Daixang Mou,
Kyung chan Lee,
Na Hyun Jo,
Adam Kaminski
Publication year - 2019
Publication title -
review of scientific instruments
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.605
H-Index - 165
eISSN - 1089-7623
pISSN - 0034-6748
DOI - 10.1063/1.5113722
Subject(s) - materials science , cryocooler , helium , liquid helium , spectroscopy , tube (container) , temperature control , pulse tube refrigerator , atmospheric temperature range , hysteresis , cryogenics , analytical chemistry (journal) , optics , atomic physics , nuclear magnetic resonance , composite material , physics , condensed matter physics , thermodynamics , chemistry , heat exchanger , quantum mechanics , regenerative heat exchanger , chromatography
We have designed, constructed, and tested a unique cold finger suitable for angle resolved photoemission spectroscopy. This design is based on in situ helium reliquification and utilizes pulse tube cryocooler. The pulse tube can be removed for baking without breaking Ultra High Vacuum (UHV). This design also allows the use of non-UHV heater that can be replaced without the need to vent the system. The cold finger has minimal vibration, operates over a temperature range of 1.7 K-400 K, and has no measurable residual magnetization. In continuous mode, it can maintain a sample temperature of 2.6 K, while in single shot mode (by pumping on liquid helium), it can reach temperatures down to 1.8 K for a period of several hours.
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