4OMATC) RO. BOX 2610 9 September 1947 WASHINGTON, D.C. IN REPLY REFER TO: = MEMORANDUM FOR: . oe _. . “we “UNCLASSth ir) CAPTAIN JAMES S. RUSSELL, U. 8. HN. Military Applications Division Atomic Energy Comission . Roem 1446, 1901 Constitution ave., a Ww. Washington, DG - SUBJECT; Nuclear Radiation Measurements for Atomic Bosb Tests. 1. In view of the importance of nuclear radiation, several studies of their effects after atomic bomb detonation are desirable in order to obtain information of both ailitary and scientific walue. Many messurenents were made during earlier tests but dus to lack of time or inadequate knomledge a number of factors were left undetermined. Sericus gaps exist in our information on the effects of a Nagasaki type bomb detonation. Insofar as possible these gaps should be filled in. Furthermore, many aeasurenents must be made on any new type weapons in order to be able to correlate nuclear radiation effects with weapon design. 2. The inclosed suggestions are only preliminary and tentative and wndoubtedly experts will be able to suggest additional measurements or modifications which would be of extreme value. In most cases the projects which have been listed could be carried out with relatively simple equipment which is readily available. (>, BOX No. Z d g S252 BEST COPY AVAILABLE COLLECTION fyfen oSMare REPOSITORY Les fe nee Complicated telemetering devices are, in most cases, not necessary, however, many instruments will require heavy shielding as protection against extraneous gamma radiation and heat. MERBERT SCOVILLE, JR. © Class’ Seal! an chenad to _UNCLASSIAIED

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