Servicios Personalizados
Revista
Articulo
Indicadores
Citado por SciELO
Accesos
Links relacionados
Similares en SciELO
Compartir
Superficies y vacío
versión impresa ISSN 1665-3521
Resumen
LARA-BERNAL, A.; MARIN, E. y CALDERON, A.. Técnica de relajación térmica con excitación variable: Caso de la "rampa" de intensidad. Superf. vacío [online]. 2007, vol.20, n.3, pp.17-20. ISSN 1665-3521.
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.
Palabras llave : Thermal relaxation; Heat transfer; Specific heat; Thermal properties.