LOW-TEMPERATURE CALORIMETRY USING AN OPTICAL HEATING METHOD

被引：4

作者：

GUTSMIEDL, P

PROBST, C

ANDRES, K

机构：

[1] Walther-Meissner-Institut fur Tieftemperaturforschung der Bayerischen Akademie der Wissenschaften, 8046 Garching

来源：

CRYOGENICS | 1991年 / 31卷 / 01期

关键词：

CALORIMETRY; MEASURING TECHNIQUES; THERMOMETRY; SMALL SAMPLES; CONDUCTIVITY; CAPACITY;

D O I：

10.1016/0011-2275(91)90191-X

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A calorimetric technique is described for the determination of the absolute heat capacity of small samples with weights of a few mg in the temperature range 0.06 - 4 K. Heat is deposited in the samples by absorption of optical light pulses from a light emitting diode (LED), which eliminates the need for a separate heater on the sample. A further reduction of the addenda is achieved by using a thin film Au - Ge thermometer. The proper operation of the calorimeter is checked by measurements on a small Cu sample weighing 30 mg.

引用

页码：54 / 57

页数：4

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