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  • 1
    Electronic Resource
    Electronic Resource
    An Electronic Demagnetization Stage for the 0.5K to 1.8K Temperature Range (2000)
    Springer
    Journal of low temperature physics 121 (2000), S. 809-814 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have designed and built a demagnetization stage to operate between 1.8K and 0.5K, a somewhat unusual temperature range for adiabatic demagnetization refrigeration. The lower bound in temperature is dictated by the thermal performance of our 3 He gas heat switch, the upper by NASA specifications. We intend this demagnetization stage to be the fast stage of a proposed two-stage continuously operating adiabatic demagnetization refrigerator (ADR) which will operate between 1.8K and 50 mK. Here we discuss thermal, mechanical, magnetic and chemical considerations which led to novel features in our salt pill design.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017585510542
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Experiments on 3He–4He Mixtures in Aerogel (2000)
    Springer
    Journal of low temperature physics 121 (2000), S. 579-584 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We describe experiments on 3 He- 4 He mixtures in 98% open aerogel grown by cold-deposition (T≤80mK) of 4 He followed by the deposition of 3 He or alternatively by cooling down a homogenous mixture. The two approaches led to different 4 He film morphologies. We will also describe the observation of migration of 4 He from or toward the cell below 100 mK. This migration can lead to the exclusion of 4 He (other than the localized surface layers) for 4 He concentrations between 4% and 11% in the cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017559310117
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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