A secondary problem is the extraction of useful energy or momentum from the products of antimatter annihilation, which are primarily in the form of extremely energetic ionizing radiation. The antimatter mechanisms proposed to date have for the most part provided plausible mechanisms for harnessing energy from these annihilation products. The classic rocket equation with its "wet" mass ()(with propellant mass fraction) to "dry" mass ()(with payload) fraction (), the velocity change () and specific impulse () no longer holds due to the mass losses occurring in antimatter annihilation.
a secondary problem is the extraction of useful energy or momentum from the products of antimatter annihilation which are primarily in the form of extremely energetic ionizing radiation the antimatter mechanisms proposed to date have for the most part provided plausible mechanisms for harnessing energy from these annihilation products the classic rocket equation with its "wet" mass ()(with propellant mass fraction) to "dry" mass ()(with payload) fraction () the velocity change () and specific impulse () no longer holds due to the mass losses occurring in antimatter annihilation