Two-stage nuclear demagnetization refrigerator reaching 27. mu. K

Journal Article · Sun Apr 01 04:00:00 EST 1984 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00683649· OSTI ID:7022757

Ishimoto, H; Nishida, N; Furubayashi, T; Shinohara, M; Takano, Y; Miura, Y; Ono, K

A two-stage nuclear demagnetization refrigerator with large cooling capacity has been constructed and sucessfully operated. The first stage consists of 11 moles of the Van Vleck paramagnet PrNi/sub 5/ in an initial field of 6 T, and the second stage consists effectively of 19 moles of copper in an initial field of 7.6 T. The minimum temperature as measured with pulsed platinum NMR is 27 ..mu..K, the lowest ever obtained in a low-field experimental region.

• Research Organization: Institute for Solid State Physics, University of Tokyo, Tokyo, Japan
• OSTI ID: 7022757
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 55:1; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ADIABATIC DEMAGNETIZATION
COPPER
CRYOGENICS
CURRENTS
EDDY CURRENTS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELEMENTS
EQUIPMENT
HELIUM DILUTION REFRIGERATORS
MAGNETIC FIELDS
MAGNETIC REFRIGERATORS
MAGNETIC RESONANCE
MAGNETISM
MAGNETS
METALS
NICKEL COMPOUNDS
NUCLEAR MAGNETIC RESONANCE
PARAMAGNETISM
PRASEODYMIUM COMPOUNDS
PULSES
RARE EARTH COMPOUNDS
REFRIGERATORS
RESONANCE
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ULTRALOW TEMPERATURE
VAN VLECK THEORY