The Layer Cake
Andrei Sakharov had arrived at Arzamas-16 in 1948 with his mentor Igor Tamm. Kurchatov had asked Tamm if he could help confirm the mathematical results that other scientists had already calculated. Sakharov, who recently received his Ph.D. under Tamm, followed him to Arzamas-16 to assist with the plans.
found some faults in the "tube" plan that Zeldovich's team had
formulated. He designed his own plan, which he called the "layer
cake." His idea was to place alternating layers of the fusionable
material (tritium and deuterium) between layers of fissionable fuel (uranium).
Vitalii Ginzburg, another of Tamm's students, added one improvement, and
everyone including Zeldovich agreed with the new plan.
Zeldovich was the head of the theoretical department at Arzamas-16.
Previous: Super Bomb