A thermal 0.8 m3enclosure with submillikelvin stability
- 1 January 1983
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 16 (1) , 96-100
- https://doi.org/10.1088/0022-3735/16/1/019
Abstract
The authors have constructed a thermally insulated box-shaped enclosure of approximate (1*1*0.8) m internal dimensions to carry out precision measurements at room temperature. The design of the enclosure is based on the solution of the heat conduction equation by a finite-difference approximation method. Temperature measurements carried out inside the enclosure in consecutive periods of eleven days over a four-month interval show that the stability obtained lies within +or-0.5 mK h-1 and the gradients are less than 50 mu K mm-1. The power spectrum analysis, via a fast Fourier transform (FFT) technique, shows the still significant components inside the insulating enclosure.Keywords
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