 "Neutron blankets" Deuterium and tritium fusion generates neutrons.This varies by technique (NIF has a record of 3E14 neutrons per second while a typical fusor produces 1E5–1E9 neutrons per second).It has been proposed to use these neutrons as a way to regenerate spent fission fuel  or as a way to breed tritium using a breeder blanket consisting of liquid lithium or, as in more recent reactor designs, a helium cooled pebble bed consisting of lithium bearing ceramic pebbles fabricated from materials such as lithium titanate, lithium orthosilicate or mixtures of these phases.