Abstract
ELECTRON collection has been obtained in hydrogen up to pressures of about 90 atmospheres. To get the very pure hydrogen needed, a cylindrical ionization chamber was made of glass (12 cm. long ; 5 cm. diameter), with an axial wire (0·2 mm. diameter), for the collecting electrode ; a coating of ‘Aquadag' on the outside of the glass formed a convenient high-voltage electrode. The chamber was very carefully evacuated, baked, sealed off, and then placed in a steel container in which the pressure of hydrogen was slowly raised at the rate of one atmosphere per hour. By means of two heated palladium tubes sealed into the glass chamber, the chamber was slowly filled with purified hydrogen.
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References
Gibson, W. M., and Livesey, D. L., Proc. Phys. Soc., 60, 523 (1948).
Green, L. L. (private communication).
Freundlich, H. F., et al., Rev. Sci. Instr., 18, 90 (1947).
Maeder, D., Helv. Phys. Acta, 20, 139 (1947).
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STAFFORD, G. A High-Pressure Hydrogen-filled Ionization Chamber. Nature 162, 771–772 (1948). https://doi.org/10.1038/162771b0
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DOI: https://doi.org/10.1038/162771b0
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