Figures 12a and 12b show the reactor is incandescent. It looks like the wrong color for a surface temperature as high as claimed. I would say this is about 900°C. As much as I hate to cite Wikipedia . . . See this color chart:
http://en.wikipedia.org/wiki/Incandescence#mediaviewer/File:Incandescence_Color.jpg Incandescence begins at ~525°C for all materials. If this reactor is at 1400°C it should be white. - Jed
