FIELD: nuclear engineering. SUBSTANCE: neutrons from the source are passed through retarder and additional retarder, which is shifted relatively the first retarder and article under radiation. Speed of the additional retarder is chosen from the condition of providing of preset energy of irradiating neutrons. EFFECT: improved efficiency. 2 cl, 3 dwg
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Authors
Dates
1994-10-30—Published
1991-04-04—Filed