Using a microscopic transport model together with a coalescence afterburner
, we study the formation of deuterons in Au+Au central collisions at root s
= 200A GeV. It is found that the deuteron transverse momentum distribution
s are strongly affected by the nucleon space-momentum correlations, at the
moment of freeze-out, which are mostly determined by the number of rescatte
rings. This feature is useful for studying collision dynamics at ultrarelat
ivistic energies. [S0556-2813(99)50309-9].