Target returns for neutral-particle-beam discrimination

: Models of weapons and decoys adequate for deposition studies can be formulated and solved analytically. Empirical conversion efficiencies predict useful weapon signals and weapon-to-decoy signal ratios for those energies of interest. Light decoys are of concern because of the numbers possible. Discriminating them on the basis of mass appears feasible with hydrogen or deuterium beams, contrary to earlier studies of much heavier decoys.