The TX-16 was the only deployed thermonuclear bomb which used a cryogenic liquid deuterium fusion fuel , the same fuel used in the Ivy Mike test device . The TX-16 was a weaponized version of the Ivy Mike design . This required both a considerable reduction in weight of the explosive package and the replacement of the elaborate cryogenic system with vacuum flasks for replenishing boiled-off deuterium . The carrier aircraft was to be the B-36 as modified under Operation Barroom . Only one B-36 was so modified . The TX-16 shared common forward and aft casing sections with the TX-14 and TX-17 / 24 and in the emergency capability ( EC-16 ) version was almost indistinguishable from the EC-14 . A small number of EC-16s were produced to provide a stop-gap thermonuclear weapon capability in response to the Russian nuclear weapons program . The TX-16 was scheduled to be tested as the Castle Yankee " Jughead " device until the overwhelming success of the Castle Bravo " Shrimp " test device rendered it obsolete
Castle Bravo
Castle Bravo
Mark 16 nuclear bomb