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  • 1
    Electronic Resource
    Electronic Resource
    Dilution refrigerator for muon spin relaxation experiments (1986)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 336-340 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The design, construction, and operational characteristics of a continuous 3He–4He dilution refrigerator specifically built for use in muon spin relaxation ( μSR) measurements at LAMPF are described in this paper. The refrigerator is unique in that it makes an angle of 30° with respect to horizontal—a requirement imposed by the previously existing physical constraints of the μSR spectrometer. Additionally, the refrigerator and associated gas handling units are portable so as to facilitate ease of movement into and out of the muon beam. Typical parameters describing refrigerator performance are 60-mK base temperature with 22-μW cooling capacity at 100 mK.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1138941
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nuclear alignment in a Kondo system as a very low temperature thermometer (1969)
    Springer
    Journal of low temperature physics 1 (1969), S. 469-476 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Cu doped with less than 1 ppm Mn54 appears to offer a number of advantages as a γ-ray anisotropy thermometer in the temperature range 1 to 20 mK. In order to use such a thermometer it is necessary to know how the hyperfine field at the Mn54 nuclei varies with temperature and with applied field. We have studied this γ-ray anisotropy and find that the hyperfine field is independent of temperature in the range 4 mK 〈T〈10 mK. Further, we have determined the hyperfine field to ±5% as a function of applied field in the range 60 Oe〈H a〈1200 Oe. The latter data may be used to determine a Kondo temperature of 64±2 mK for this system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00628210
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    54Mn in Fe for ultralow temperature thermometry (1971)
    Springer
    Journal of low temperature physics 4 (1971), S. 605-614 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Experimental investigations into the accuracy of nuclear orientation thermometry are reported.54Mn in iron, a primary thermometer useful from 2–40 mK, gives consistent thermometry using both scintillation (3×3 in.-NaI) and solid-state (40-cc-Ge) detectors.60Co-in-iron temperatures are consistent with the54Mn temperatures above 10 mK, but are about 10% higher at 4 mK.125Sb in iron registers a temperature that is perhaps 2 or 3% lower over the 4–15 mK region. Some of the techniques required for the utilization of this type of thermometry are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00628296
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    Paper (German National Licenses)
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