For boosted fission weapons, the size of the centrally placed initiator is critical and has to be as small as possible; replacement with an external neutron source allows for more flexibility, such as variable yields.
The use of an external neutron source allows more flexibility, such as variable yields. For boosted fission weapons, the size of the centrally placed initiator is critical and has to be as small as possible.
For boosted fission weapons, the size of the centrally placed initiator is critical and has to be as small as possible. The use of an external neutron source allows more flexibility, such as variable yields.
For boosted fission weapons, the size of the centrally placed initiator is critical and has to be as small as possible. The use of an external neutron source allows more flexibility, such as variable yields.