𝔖 Bobbio Scriptorium
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An improved version of the He3He4 refrigerator through which He4 is circulated

✍ Scribed by N.H. Pennings; K.W. Taconis; R. de Bruyn Ouboter

Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
146 KB
Volume
14
Category
Article
ISSN
0011-2275

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✦ Synopsis

QT n -(4) L At the low temperature end, T = 4.2 K and (5) and the parameters p, A, X, Cp are constant and over a short length near the end the temperature variation can be taken as linear, which means that d2T -0 dx 2 From (3), (4), and (5) LI2pX 1 QT-Cp QL By differentiating dQT LI2 pX 1 dQL Cp Q~ dQr m<0 dQL

In conclusion, by adding a heater in the bath, the cooling of the leads in improved, resulting in a smaller heat input through the leads (and a safer operation) but the overall losses are always larger than without the heater.

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