Wikipedia describes Dr. Robert Stadler from Atlas Shrugged as follows:
A former professor at Patrick Henry University, and along with colleague Hugh Akston, mentor to Francisco d'Anconia, John Galt and Ragnar Danneskjöld. He has since become a sell-out, one who had great promise but squandered it for social approval, to the detriment of the free. He works at the State Science Institute where all his inventions are perverted for use by the military, including the instrument of his demise: Project X (Xylophone). The character was, in part, modeled on J. Robert Oppenheimer, whom Rand had interviewed for an earlier project, and his part in the creation of nuclear weapons. To his former student Galt, Stadler represents the epitome of human evil, as the "man who knew better" but chose not to act for the good.
(It cites Ayn Rand's journals as a source for these claims, which I unfortunately do not have access to at this time).
In what way was Stadler based on Oppenheimer? Since Stadler's defining characteristic was being the man that knew better, did Ayn Rand view Oppenheimer in the same way? What did Oppenheimer know better than to do - work on nuclear weapons? (Wikipedia seems to imply as much). If so, why did she oppose his involvement with that?
I can see how Project X was analogous to nuclear weapons in one sense, but Dr. Stadler was only loosely aware of the project (although he was admittedly ignorant largely by his own choice) whereas Oppenheimer personally supervised the research into the nuclear bomb, so does this analogy "break down" at some point?
What's the exact nature of the analogy between Stadler and Oppenheimer? Is Wikipedia's assessment of the analogy accurate?