17 translate this into terms of dose, including the effect of scattered soft radiation from the higher energy lines in the spectrum, the percentage of the dose is still in the neighborhood of 16 or 17 per cent. The T-1-B cutoff, I have approximated as best I could with data which were taken in our laboratory, both recently and a couple of years ago. The sensitivity falls down quite strongly at a range a@ 60-50 KV. But evan making a generous estimate of the Alderson Reporting Company Washington, D. C. correction factor, energy region, the overall correction factor for the T-1-B 11 seems to be close enough to unity within the limits af the 12 error we can specify here. 13 14 accepted as being accurate. 15 in this region is small, I do not think that we need to consi 16 that it. departed materially from the total doses estimates 17 we have here. 18 three general ranges of energy. 19 region of about 17 per cent. 20 the 600 to 800 KV region of perhaps 50 per cent. 21 15 to 20 per cent in the 1,5-1.6 KV region, with the balance . eentat shay att ~ Pistories > . 429 Ano. a8 a One in the 100 KV to 200 KV The majority of the dose in And about So that th exposure to each of three separate radiation energies. 25 Departr The total dose would appar to have resulted fr exposure could probably be treated as a composite of an 24 Reda Ty Since the proportion of the dose of the dose spread out between these three humps. 23 t Caarsy - The reading of the instrument, I think, could be ARC at be applied to a dose in this 10 22 ant that must ' DR. DUNNING: Let ce ask you again for the benefit ‘ he: