Tecnica de relajacion termica con excitacion variable: Caso de la rampa de intensidad
In the thermal relaxation technique a sample is supported adiabatically in a recipient under vacuum conditions, while one of its surfaces is illuminated uniformly at the same time that the temperature, T, of the opposite surface is measured as a function of time, t. From the dependence T (t) the val...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2007 |
| País: | México |
| Institución: | Instituto Politécnico Nacional |
| Repositorio: | Repositorio Digital del IPN |
| OAI Identifier: | oai:www.repositoriodigital.ipn.mx:123456789/10943 |
| Acceso en línea: | http://hdl.handle.net/123456789/456 http://www.repositoriodigital.ipn.mx/handle/123456789/10943 |
| Access Level: | acceso abierto |
| Palabra clave: | Tecnica de relajacion termica Calor especifico |
| Sumario: | In the thermal relaxation technique a sample is supported adiabatically in a recipient under vacuum conditions, while one of its surfaces is illuminated uniformly at the same time that the temperature, T, of the opposite surface is measured as a function of time, t. From the dependence T (t) the value of the specific heat capacity, C, can be determined. In this work we have calculated T (t) in the case of variable illumination, specifically for a ramp of light intensity I, of the form I=I0t, where I0 is a constant. On the basis of mathematical simulations we have discussed the advantages of this variant when compared with the case of constant illumination. |
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