Then quemamest a = $42 (93) (0.0229) - — = 105 at 27 days (Shot 9) And for Shot 2: a@s1e5 (13.4) = Dye at 27 days. The total dose to the Antestinal wall froa the beta radiation of the fission products as a whole my also be estimated. As a rough approximtion the intestine may be regarded as a cylinder of one centineter radius ari 10 ustor length, filled with a honogensous mixture of fission products ard water. Using the estimsted value of EZ, for fission produste during various tine intervals after burst, the value af 4 may be estimated for water during these times as follows: a P m of where 4 = Linear absorption eoeffinient, am> P w= density, gufent (for water P = 1) d§ ~ halfwintensity thickness of -uaterial, gnfon'’. The quantity 4, is umually about one eighth of the range of 2 beta spectrum. Ag a first approximation, then, one may ealovlate a/P from the Feather range = erergy relation: 0.5438,~06160 wen = (00699) 0.543000160 (gnfen*) eo eee ere c cence sone eee ss of(il) ~L&- POS ARCHIVES