Accession Number : ADA995397

Title :   Operation Upshot-Knothole. Project 6.9. Evaluation of Naval Airborne Radiac Equipment.

Descriptive Note : Rept. for Mar-Jun 53,

Corporate Author : ATOMIC ENERGY COMMISSION WASHINGTON DC

Personal Author(s) : Terry,John H.

Report Date : JUN 1953

Pagination or Media Count : 45

Abstract : Five Types of Naval airborne RADIAC equipment were tested and evaluated in conjunction with five atomic detonations. The AN/ADR-1 automatic recording dosimeters provided gamma intensity contours at altitude. Extrapolation of these curves to ground level gave values for ground gamma intensity which appear to be correct within an order of magnitude. The AN/ADR-4 ground intensity survey equipment gave patterns for ground intensity which were not in close agreement with those determined on the ground. However, introduction of a scale factor of dividing by 1.8 gives a reasonable introduction of a scale factor of dividing by 1.8 gives a reasonable agreement. The AN/USQ-1 and AN/ARR-29 gamma intensity telemetering system was completely unsatisfactory. The gamma intensity droppable flashing light units possessed insufficient light emission to be detectable at 2000 feet altitude unless the location of the units was precisely known. The droppable gamma intensity flares either did not operate properly or failed to fall in a sufficiently high intensity area to be activated. Only two of these units were available fo drop and the results are inconclusive.

Descriptors :   *RADIATION MEASURING INSTRUMENTS, *DOSIMETERS, INTENSITY, AIRBORNE, NAVAL EQUIPMENT, GAMMA RAYS, RADIOACTIVITY, TELEMETER SYSTEMS, NUCLEAR EXPLOSION TESTING, NEVADA

Subject Categories : Radiobiology
      Nuclear Instrumentation

Distribution Statement : APPROVED FOR PUBLIC RELEASE