论文部分内容阅读
为了进行低温的测量,有时需要在4.2—300K 整个范围内具有高灵敏度和易于使用的电阻值的温度计。一些纯金属,如铂、铜、镍等,它们的电阻值适于用作测温参量。但在低温下,由于电阻值和电阻温度系数都变得很小,因而不适于制作15K 以下的电阻温度计。铟电阻温度计却可用至很低的温度。铟的弟拜温度很低,大约为110K,一直到超导转变点
In order to perform the low-temperature measurement, it is sometimes necessary to have a thermometer that has high sensitivity and easy-to-use resistance across the entire range of 4.2 to 300K. Some pure metals, such as platinum, copper, nickel, etc., their resistance value is suitable for temperature measurement parameters. However, at low temperatures, resistance and temperature coefficient of resistance become very small, and therefore not suitable for the production of 15K or less resistance thermometer. Indium resistance thermometers are available to very low temperatures. Indium’s temperature is low, about 110K, until the transition point of superconductivity