Abstract

The behavior of fission products in electricity-generating channels with communicating and separated fuelelement cavities and an interelectrode gap (IEG) is examined in application to a secondary-loop channel and a space nuclear power facility. Thermodynamic and kinetic computational studies of the behavior of gaseous and volatile fission products in the IEG and vacuum-cesium system are performed. Their effect on the output electrical power of thermionic EGCs with communicating and separated fuel-element cavities and IEGs is evaluated, taking barium as an example. The results can be used to determine the optimal design and further optimize EGCs by performing tests in the secondary-loop channel and with facility implementations.

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