[jiggawatts]

Reminds me of another design secret that leaked out because someone published a paper titled something like "X-ray crystallography of Lithium Deuteride under high pressure."

People very quickly figured out that this was the source of the D-T fuel in fusion part of the bomb instead of cryogenic D-T liquid. Lithium Deuteride is nasty stuff, but it's a storable solid. When bombarded with neutrons from the fission primary, the Lithium splits and forms tritium, which then combines with the deuterium that was the other half of the crystal.

The reason the usage was obvious (from the title alone!) is that very few chemists would care about any property of Lithium Hydride, which is dangerous to handle and has few practical uses. Lithium Deuteride is unheard of in analytical chemistry, and its crystallography under high pressure is totally uninteresting to anyone... except physicists working on atomic weapons.