The structure factors of liquid caesium-thallium alloys with thallium
concentrations of 50 to 85 at. % have been measured by means of neutro
n diffraction. They exhibit a prepeak which shifts to smaller wave vec
tors with increasing thallium content. This result is explained using
a model in which neutral units Cs,TI, are dissolved in an excess of li
quid thallium. (C) 1998 American Institute of Physics. [S0021-9606(98)
70122-3].