ANTI-MATTER ROCKETS
The anti-matter rockets are a special class of rockets that use anti-matters as their power-house source. There are several designs that attempt to accomplish this goal. The advantage to this class of rockets is that severally a large fraction of the rest of a matter/anti-matter mau be converted to energy, allowing antimatter rockets to have a far higher energy density and specific impulses than any other proposed class of rockets. Pure anti-matter rockets use anti-protons annihilations reaction which produce charged and uncharged pions, in addition to neutrions and gamma rays.
Thermal anti-matter rockets use the energy or heat from the annihilation harnessed to create an exhaust from non-toxic materials or propellants . Anti-matters power generation use anti-matter annihilation to directly or indirectly heat a working fluid, a in a nuclear thermal rocket, but the fluid is used to generate electricity