Fission product behavior within two W--UO$sub 2$ cermet fuel elements irradiated in a temperature gradient

Safe radioisotope thermoelectric generators and heat sources for space applications

“…Tungsten exhibits good thermal conductivity and has a high melting point. In addition to this, it has been demonstrated that a tungsten matrix is capable of containing any gaseous fission products up to a temperature of 1550°C [37]. Although the density of tungsten is much greater than that of graphite, the physical properties of the material result in a much smaller volume requirement.…”