抄録
Enhancement of radiolethality of E. coli was observed by KF during irradiation. The shape of survival curve of exponential type was not altered by KF, and it was only effective at pH below 6.0 and not so influenced by oxygen and additional SH compound. Pre or post-irradiation treatment with KF did not exert any changes in viability of cells. Referring to this enhancement, effect of fluoride ion on water radiolysis was investigated, and these results were discussed in comparison with the cases of other halide ions.