Abstract
The first screw extruder capable of continuously forming macroscopic solid hydrogen particles to be injected into the plasma of thermonuclear devices was created and successfully tested. A model of nonisothermal hydrogen flow in the screw channel was developed and used to calculate the extruder efficiency as a function of the system parameters. The results of calculations and experimental data are presented for the extrusion of 500 cm3 of solid hydrogen using an extruder with a working volume of 8 cm3 operating at a rate of 63 mm3/s. Temperature dependences of the viscosity and shear strength of solid hydrogen were studied in the temperature interval from 10 to 13 K, where solid hydrogen behaves like a Bingham fluid.
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Translated from Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 70, No. 1, 2000, pp. 107–112.
Original Russian Text Copyright © 2000 by Vinyar, Lukin.
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Vinyar, I.V., Lukin, A.Y. Screw extruder for solid hydrogen. Tech. Phys. 45, 106–111 (2000). https://doi.org/10.1134/1.1259579
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DOI: https://doi.org/10.1134/1.1259579