— 71 — MICRODOSIMETRIC DATA AND THE BIOLOGICAL EFFECTIVENESS OF NEUTRONS*

fs presently being given t o the radloblology o f neutrons. Some, and not the least important, reasons are of purely p r a c t i c a l nature. The I n creasing spread of nuclear technology has led t o an intense discussion o f the p o t e n t i a l hazards of small doses of neutrons as they may occur i n the v i c i n i t y o f nuclear power s t a t i o n s, or o f acute exposures i n nuclear accidents. The recent Introduction of neutron therapy i n various centers around the world Is equally Important, and I t poses a related problem, w i t h the difference that the In t e r e s t Is i n the e f f e c t s not of small but of high absorbed doses o f neutrons. Apart from these p r a c t i c a l reasons the radloblology of neutrons i