Reduction of radiation errors in thermal conductivity measurements above 100 K

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 r...

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Autores principales: Bekeris, Victoria Isabel, Sánchez, María José, Simonelli, Gabriela
Publicado: 1991
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00346748_v62_n4_p1054_Talpe
http://hdl.handle.net/20.500.12110/paper_00346748_v62_n4_p1054_Talpe
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00346748_v62_n4_p1054_Talpe
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spelling paper:paper_00346748_v62_n4_p1054_Talpe2023-06-08T15:00:51Z Reduction of radiation errors in thermal conductivity measurements above 100 K Bekeris, Victoria Isabel Sánchez, María José Simonelli, Gabriela 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. Fil:Bekeris, V.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Sanchez, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Simonelli, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1991 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00346748_v62_n4_p1054_Talpe http://hdl.handle.net/20.500.12110/paper_00346748_v62_n4_p1054_Talpe
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description 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.
author Bekeris, Victoria Isabel
Sánchez, María José
Simonelli, Gabriela
spellingShingle Bekeris, Victoria Isabel
Sánchez, María José
Simonelli, Gabriela
Reduction of radiation errors in thermal conductivity measurements above 100 K
author_facet Bekeris, Victoria Isabel
Sánchez, María José
Simonelli, Gabriela
author_sort Bekeris, Victoria Isabel
title Reduction of radiation errors in thermal conductivity measurements above 100 K
title_short Reduction of radiation errors in thermal conductivity measurements above 100 K
title_full Reduction of radiation errors in thermal conductivity measurements above 100 K
title_fullStr Reduction of radiation errors in thermal conductivity measurements above 100 K
title_full_unstemmed Reduction of radiation errors in thermal conductivity measurements above 100 K
title_sort reduction of radiation errors in thermal conductivity measurements above 100 k
publishDate 1991
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00346748_v62_n4_p1054_Talpe
http://hdl.handle.net/20.500.12110/paper_00346748_v62_n4_p1054_Talpe
work_keys_str_mv AT bekerisvictoriaisabel reductionofradiationerrorsinthermalconductivitymeasurementsabove100k
AT sanchezmariajose reductionofradiationerrorsinthermalconductivitymeasurementsabove100k
AT simonelligabriela reductionofradiationerrorsinthermalconductivitymeasurementsabove100k
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