蒸着ボロメーターの研究(2)
1956 年 25 巻 1 号 p. 29-33
詳細
1956 年 25 巻 1 号 p. 29-33
As the previous experiments indicated that the current noise is the principal factor which determines the ultimate sensitivity of a bolometer made by vacum evaporation, investigations are carried out to trace the origine of this noise and by eliminating it, the performance of the bolometer is remarkably improved.
A typical bolometer possesses a resistance of about 1 KΩ and shows a sensitivity between 20 and 30μV/μW if the electric current of 2mA is passed through it. As the bolometer is damaged if the current exceeds about 10mA in the atmosphere of about 15°C, its maximum sensitivity would be much higher than this. When it is used as a detector of the usual infrared spectrometer with a quartz prism, the fine structure of the vibration-rotation band of HCI at 3.46μ can be easily resolved.
