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# Analysis of fractional mass of liquid helium remaining at different temperatures during refrigeration between 4.2 K and 1.3 K

Arunachalam, S and Jacob, S and Karunanithi, R and Kasturirengan, S (1987) Analysis of fractional mass of liquid helium remaining at different temperatures during refrigeration between 4.2 K and 1.3 K. In: Indian Journal of Cryogenics, 12 (2). pp. 125-128.

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## Abstract

The mass of liquid He in a cryostat is detected at 1.3-4.2 K and the data are analyzed on the basis of reversible and irreversible models of J. Nicol and H. V. Bohm (1959). The reversible model describes the experimental data on fractional volumes satisfactorily at $\leq1.8 K$. The irreversible model can be used to determine the minimum fractional volumes during the pumping of a He dewar. The data are useful in the design of He II transfer systems for space applications.

Item Type: Journal Article http://www.nsc.ernet.in/iccwebsite/journ... Copyright of this article belongs to Indian Cryogenics Council. Division of Physical & Mathematical Sciences > Physics 28 Apr 2008 27 Aug 2008 13:20 http://eprints.iisc.ernet.in/id/eprint/13792

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