Heat capacity of confined helium very near the lambda point

D. R. Swanson; J. A. Nissen; X. Qin; P. R. Williamson; J. A. Lipa; T. C.P. Chui; U. E. Israelsson; F. M. Gasparini

doi:10.2514/3.55721

Heat capacity of confined helium very near the lambda point

D. R. Swanson
, J. A. Nissen
, X. Qin
, P. R. Williamson
, J. A. Lipa
, T. C.P. Chui
, U. E. Israelsson
, F. M. Gasparini

Physics

Stanford University
Jet Propulsion Laboratory, California Institute of Technology
California Institute of Technology

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We describe the background and status of a Shuttle mission to measure the heat capacity of helium confined by parallel plates with 57-μm spacing very close to the superfluid transition. The purpose of the experiment is to compare the results with the emerging theory of confined systems with emphasis on the behavior during crossover from three to two dimensions. The experiment will use a cylindrical copper calorimeter of very high thermal conductivity, partly filled with evenly spaced thin silicon plates. It will be attached to a pair of high-resolution, fast-response paramagnetic salt thermometers with rms noise levels below 0.1 nK/Hz^1/2 and suspended from a high-stability thermal isolation system previously used on the Shuttle. We expect to obtain heat capacity data to within 1 nK of the lambda point. In addition, wide-range data containing information on the behavior of the surface specific heat will be collected.

Original language	English
Pages (from-to)	154-159
Number of pages	6
Journal	Journal of Spacecraft and Rockets
Volume	33
Issue number	1
DOIs	https://doi.org/10.2514/3.55721
State	Published - 1996

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10.2514/3.55721

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abstract = "We describe the background and status of a Shuttle mission to measure the heat capacity of helium confined by parallel plates with 57-μm spacing very close to the superfluid transition. The purpose of the experiment is to compare the results with the emerging theory of confined systems with emphasis on the behavior during crossover from three to two dimensions. The experiment will use a cylindrical copper calorimeter of very high thermal conductivity, partly filled with evenly spaced thin silicon plates. It will be attached to a pair of high-resolution, fast-response paramagnetic salt thermometers with rms noise levels below 0.1 nK/Hz1/2 and suspended from a high-stability thermal isolation system previously used on the Shuttle. We expect to obtain heat capacity data to within 1 nK of the lambda point. In addition, wide-range data containing information on the behavior of the surface specific heat will be collected.",

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AU - Swanson, D. R.

AU - Nissen, J. A.

AU - Qin, X.

AU - Williamson, P. R.

AU - Lipa, J. A.

AU - Chui, T. C.P.

AU - Israelsson, U. E.

AU - Gasparini, F. M.

PY - 1996

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AB - We describe the background and status of a Shuttle mission to measure the heat capacity of helium confined by parallel plates with 57-μm spacing very close to the superfluid transition. The purpose of the experiment is to compare the results with the emerging theory of confined systems with emphasis on the behavior during crossover from three to two dimensions. The experiment will use a cylindrical copper calorimeter of very high thermal conductivity, partly filled with evenly spaced thin silicon plates. It will be attached to a pair of high-resolution, fast-response paramagnetic salt thermometers with rms noise levels below 0.1 nK/Hz1/2 and suspended from a high-stability thermal isolation system previously used on the Shuttle. We expect to obtain heat capacity data to within 1 nK of the lambda point. In addition, wide-range data containing information on the behavior of the surface specific heat will be collected.

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JF - Journal of Spacecraft and Rockets

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ER -

Heat capacity of confined helium very near the lambda point

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