摘要
应用计算机数据处理技术及快速高精度Ａ／Ｄ转换器，把淹没在超低噪声放大器的固有噪声中的超导临界弱电压提取出来。为高温超导材料Ｊｃ参数的瞬间测量提供强有力的手段。
The paper presents a minute description of a technique for the amplification and measurement of weak singals and data processing. Using the computer data processing technique and a high speed and high precision A/D converter, the critical weak voltage of a superconductor can be extracted from the intrinsic noise of the amplifier. This technique provides a very useful means for the measurement of the Jc parameter of superconductors.
基金
中国科学院物理研究所国家超导重点实验室资助
关键词
高温超导
Jc参数
单次信号
数据处理
噪声放大器
high temperature superconductor Jc parameter
singletime signal
sampling average
pulse method
data processing
