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. Israelsson; F. M. Gasparini

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. Israelsson
, F. M. Gasparini

Physics

Stanford University
California Institute of Technology

Research output: Contribution to conference › Paper › peer-review

Abstract

We describe the background and status of a space shuttle mission to measure the heat capacity of helium confined by parallel plates with 50 micron 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 cross-over from three to two dimensions. The confined helium experiment (CHEX) will use a cylindrical copper calorimeter of very high thermal conductivity, partially filled with evenly spaced thin silicon plates. It will be attached to a pair of high resolution, fast response paramagnetic salt thermometers with noise levels in the 10^-11K range and suspended from a high stability thermal isolation system previously used on the Shuttle. The resolution expected in the heat capacity measurements is about one nano-Kelvin from 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	1-8
Number of pages	8
State	Published - 1995
Event	33rd Aerospace Sciences Meeting and Exhibit, 1995 - Reno, United States Duration: Jan 9 1995 → Jan 12 1995

Conference

Conference	33rd Aerospace Sciences Meeting and Exhibit, 1995
Country/Territory	United States
City	Reno
Period	01/9/95 → 01/12/95

Cite this

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title = "Heat capacity of confined helium very near the lambda point",

abstract = "We describe the background and status of a space shuttle mission to measure the heat capacity of helium confined by parallel plates with 50 micron 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 cross-over from three to two dimensions. The confined helium experiment (CHEX) will use a cylindrical copper calorimeter of very high thermal conductivity, partially filled with evenly spaced thin silicon plates. It will be attached to a pair of high resolution, fast response paramagnetic salt thermometers with noise levels in the 10-11K range and suspended from a high stability thermal isolation system previously used on the Shuttle. The resolution expected in the heat capacity measurements is about one nano-Kelvin from the lambda point In addition, wide range data containing information on the behavior of the surface specific heat will be collected.",

author = "Swanson, \{D. R.\} and Nissen, \{J. A.\} and X. Qin and Williamson, \{P. R.\} and Lipa, \{J. A.\} and Chui, \{T. C.P.\} and U. Israelsson and Gasparini, \{F. M.\}",

note = "Publisher Copyright: {\textcopyright} 1995, by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.; 33rd Aerospace Sciences Meeting and Exhibit, 1995 ; Conference date: 09-01-1995 Through 12-01-1995",

year = "1995",

language = "English",

pages = "1--8",

}

TY - CONF

T1 - Heat capacity of confined helium very near the lambda point

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.

AU - Gasparini, F. M.

PY - 1995

Y1 - 1995

N2 - We describe the background and status of a space shuttle mission to measure the heat capacity of helium confined by parallel plates with 50 micron 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 cross-over from three to two dimensions. The confined helium experiment (CHEX) will use a cylindrical copper calorimeter of very high thermal conductivity, partially filled with evenly spaced thin silicon plates. It will be attached to a pair of high resolution, fast response paramagnetic salt thermometers with noise levels in the 10-11K range and suspended from a high stability thermal isolation system previously used on the Shuttle. The resolution expected in the heat capacity measurements is about one nano-Kelvin from the lambda point In addition, wide range data containing information on the behavior of the surface specific heat will be collected.

AB - We describe the background and status of a space shuttle mission to measure the heat capacity of helium confined by parallel plates with 50 micron 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 cross-over from three to two dimensions. The confined helium experiment (CHEX) will use a cylindrical copper calorimeter of very high thermal conductivity, partially filled with evenly spaced thin silicon plates. It will be attached to a pair of high resolution, fast response paramagnetic salt thermometers with noise levels in the 10-11K range and suspended from a high stability thermal isolation system previously used on the Shuttle. The resolution expected in the heat capacity measurements is about one nano-Kelvin from the lambda point In addition, wide range data containing information on the behavior of the surface specific heat will be collected.

UR - https://www.scopus.com/pages/publications/84963593245

M3 - Paper

AN - SCOPUS:84963593245

SP - 1

EP - 8

T2 - 33rd Aerospace Sciences Meeting and Exhibit, 1995

Y2 - 9 January 1995 through 12 January 1995

ER -

Heat capacity of confined helium very near the lambda point

Abstract

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