Be >». UNCLASSIFIED Meutroa fluxversus distance - This could be accomplished by placing | the elements used in (2a.) at various distances-from the point of detonation. _ @. , an ‘Neutron absorption and scattering - This could be measured by placing the elements used in (2a.) behind known ebields and at different beights abovewater andland. ple: . d, Meutron Pexversus tine = This mes <3 G8 ean be worked out1% » 7 since it has been the subject However, from a practical po it is fairly well estab] would appear much more t for gamma radiation. « be a desirable factor to investigate considerable theoretical speculation, view it is not too vital, since d that eseentially-all the neutrons are . emitted almost instantanesusly at the time of detonation. 3. Residual contamination. a. . , . Direct contamination - Ground samples should be eollected at various locations around the point ef detonation and subjected to radio- chemical analysis, These results should be correlated with distance from the center and type of surface. Preliminary analyses of the chemical and physical characterietics of the soil should be made prior to the detonation in order to correlate them with the erater characteristics. b. . hee al a. tive cloud. yo Air sampling - Air eamples should be collected from the cloud at different times after the detonation. These should be subjected 8ee alone entityne made Ofthe ratte KE ateeeee,ana alpbs activity. ae : ee s Pigld from slowd - fhe gamm field, both outsideandwithin theglowd, should be measured. This sould be dane by means of oe u oe es Downwind fall-out - The areas downwind should be surveyed for deposition of radioactive material from the elouwd. Attempts should be made to correlate these findings with the soil characteristics of the crater and the weather conditions. It might be even desirable to place sellecting slides at various locations downwind in order to / measure the particle size of the active material. i") 2. pee@rding denisation cheabers placed in any drone planes that may = &; be used to collect samples. Filn badges should also be placed in ony sosh planes in order to measure directly the dosage which would jeSeem 4a planeo passing through 2 slwad. . 5 detection - fhe progrem on this project shouldbe correlated with those groups interested in this subject. .

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