We present results of isothermal molecular dynamics simulations for so
dium clusters of size N = 8, 20, 100. Generalized pair correlation fun
ctions and static and dynamic structure factors are calculated for tem
peratures in the range 100-400 K. Na-20 and Na-100 appear to undergo a
melting transition, which is observable in both static and dynamic st
ructure factors. Because of its small size, Na-8 shows no dramatic cha
nge in its properties with temperature. We conclude that x-ray and the
rmal neutron scattering, in particular, can be used as valuable source
s of information on the ionic dynamics and structure of sodium cluster
s.