4 ms·

Don't you have this backwards? Fusion is the fusing of two hydrogen atoms into a helium atom - the process of the H-bomb. Fission is the splitting of a uraniu

• arethuza 11y ago
  Most H-bomb designs have a (fusion) boosted fission primary, then a fusion secondary that has itself a boosted fission "spark-plug", then fusion then fission of the secondary tamper by the neutrons from the secondary fusion stage - with this latter fission stage contributing most of the energy.
• davideous 11y ago
  There are bombs where a fission stage ignites a fusion stage which sends neutrons to start another fission reaction. From: https://en.wikipedia.org/wiki/Thermonuclear_weapon#Summary https://en.wikipedia.org/wiki/Thermonuclear_weapon#Summary "(3) The fusion fuel of the secondary stage may be surrounded by depleted uranium or natural uranium, whose U-238 is not fissile and cannot sustain a chain reaction, but which is fissionable when bombarded by the high-energy neutrons released by fusion in the secondary stage. This process provides considerable energy yield (as much as half of the total yield in large devices), but is not considered a tertiary "stage". Tertiary stages are further fusion stages (see below), which have been only rarely used, and then only in the most powerful bombs ever made."
• marcosdumay 11y ago
  Nope. The fusion stages in an H bomb are there mostly to enable further fission stages.