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Author
Martinez, E.N.
;
Esquinazi, P.
;
Luzuriaga, J.
Title
Measurements of the superfluid transition in helium by means of a vibrating reed
Type
Journal Article
Year
1990
Publication
American Journal of Physics
Abbreviated Journal
Am. J. Phys.
Volume
58
Issue
12
Pages
1163-1168
Keywords
Abstract
A relatively simple method is presented that has been used in an undergraduate experimental course for observing the superfluid transition in 4He. The experimental technique consists of submerging a vibrating reed in liquid helium and observing the changes in frequency and damping (energy dissipation) as the temperature is regulated above and below the superfluid transition. The results of the measurements are interpreted by means of a simplification of the acting hydrodynamic forces, and it is seen that most of the relevant physics is well described by the approximations.
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ISSN
0002-9505
ISBN
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Notes
ISI:A1990EJ58300010
Approved
no
Call Number
BT @ hernan @
Serial
258
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