Nickel bolometers |
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Authors: | R Novák J Hrbek |
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Institution: | (1) Institute of Solid State Physics, Czechosl. Acad. Sci., Prague, Cukrovarnická 10, Praha 6, Czechoslovakia |
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Abstract: | A modified method of the production of nickel bolometers and their properties are described. A typical example is a bolometer of dimensions 005×2 mm and resistance 14.9 , the NEP (noise equivalent power) of which is 6.23×10–11 Wc–1/2 in air and 1.9×10–11 Wc–1/2 in vacuo. The paper also describes the influence of cooling the surroundings with liquid nitrogen on the properties of the bolometer. The NEP of a bolometer that works in vacuo with cooled surroundings is 5 times lower. A method is given for correcting the characteristics of two similar bolometers for use in a d.c. bridge which makes the equilibrium of the bridge independent of bridge-current fluctuations in a large range of current. |
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