Based on the analysis of the interaction between heavy ion as well as pulsed laser and silicon materials,a criterion for a pulsed laser energy equivalent linear energy transfer (LET) was presented. The criterion assumes that if each absorbed photon can generate a carrier in semiconductor materials,the energy to generate a carrier induced by pulsed laser and heavy ion is equivalent. Using this criterion and Beer's law,an equivalent conversion formula between pulsed laser energy and heavy-ion LET under linear...