[en] The proposed void-swelling simulation experiments using simultaneous heavy ion damage and helium injection are analysed using the chemical rate theory model. The correlations between neutron irradiation conditions, with their associated helium generation, and the so called 'dual beam' simulation experiments are considered. It is found that the high-temperature 'second peak' which is a very significant feature of the void-swelling in neutron-irradiated 316 steel, particularly in the cold-worked condition, can, in principle, be reproduced in the much higher dose-rate simulation experiments. The authors show that this feature will not be so dominant as under neutron conditions, but with care it should be experimentally observable. Direct correlations between the two irradiation conditions are more complicated than the simple idea of a 'temperature shift' as used previously, but the theoretical analysis clearly shows how such correlations can be made. The theoretical model has been used quantitatively to determine the dual-beam conditions required to expose the important features of the void-swelling under neutron conditions. (Auth.)