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Abstract:

A steady-state method for thermal conductivity measurements above 100 K on poor conductors is described. Radiation errors are made negligible using a closely fitting shield with a temperature profile matched along its length to that of the sample. Calculations show that for a typical geometry, the radiation error at room temperature is two or three orders of magnitude lower than for a shield kept at the sink temperature. The experimental setup is described and measurements on PMMA are reported. The results agree with measurements reported by other authors who use completely different methods.

Registro:

Documento: Artículo
Título:Reduction of radiation errors in thermal conductivity measurements above 100 K
Autor:Talpe, J.H.; Bekeris, V.I.; Sanchez, M.J.; Simonelli, G.
Filiación:Laboratorio de Bajas Temperaturas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, (1428) Buenos Aires, Argentina
Año:1991
Volumen:62
Número:4
Página de inicio:1054
Página de fin:1056
DOI: http://dx.doi.org/10.1063/1.1142057
Título revista:Review of Scientific Instruments
ISSN:00346748
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00346748_v62_n4_p1054_Talpe

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Citas:

---------- APA ----------
Talpe, J.H., Bekeris, V.I., Sanchez, M.J. & Simonelli, G. (1991) . Reduction of radiation errors in thermal conductivity measurements above 100 K. Review of Scientific Instruments, 62(4), 1054-1056.
http://dx.doi.org/10.1063/1.1142057
---------- CHICAGO ----------
Talpe, J.H., Bekeris, V.I., Sanchez, M.J., Simonelli, G. "Reduction of radiation errors in thermal conductivity measurements above 100 K" . Review of Scientific Instruments 62, no. 4 (1991) : 1054-1056.
http://dx.doi.org/10.1063/1.1142057
---------- MLA ----------
Talpe, J.H., Bekeris, V.I., Sanchez, M.J., Simonelli, G. "Reduction of radiation errors in thermal conductivity measurements above 100 K" . Review of Scientific Instruments, vol. 62, no. 4, 1991, pp. 1054-1056.
http://dx.doi.org/10.1063/1.1142057
---------- VANCOUVER ----------
Talpe, J.H., Bekeris, V.I., Sanchez, M.J., Simonelli, G. Reduction of radiation errors in thermal conductivity measurements above 100 K. 1991;62(4):1054-1056.
http://dx.doi.org/10.1063/1.1142057