Helium-3 adsorption refrigerator cooled with a closed-cycle cryocooler
- Resource Type
- Authors
- A. N. Chernikov; V. N. Trofimov
- Source
- Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques. 8:956-960
- Subject
- Cryostat
Materials science
Nuclear engineering
Refrigerator car
chemistry.chemical_element
Thermodynamics
Cryocooler
Cooling capacity
Helium-3 refrigerator
Surfaces, Coatings and Films
law.invention
chemistry
law
Absorption refrigerator
Dilution refrigerator
Helium
- Language
- ISSN
- 1819-7094
1027-4510
A helium-3 adsorption refrigerator cooled with a pulse-tube cryocooler is developed. The refrigerator has two stages of adsorption pumping. The first stage is designed for the condensing and pumping of helium-4, whose cooling capacity is used for the condensation of helium-3. The second stage is designed for pumping helium-3. The final temperature reached by the refrigerator is 0.305 K. This temperature is retained for at least 24 h. The time required for helium recondensation and the obtainment of low temperature is 1.5 h. The cryostat is a self-contained instrument, as it contains no external gas-supply pipelines and the working gas is stored directly within the working volume of the refrigerator. The work is performed in the Frank Laboratory of Neutron Physics of the Joint Institute for Nuclear Research.