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Project 2.63 - Collection end Characterization of Fallout with Time T. Triffet
OBJECTIVES
To collect samples of fallout and measure radiation field intensities
with time at various distances from high yield lend, water and air thermonuclear detonations.
To study these samples from early times with respect
to gemma end beta activity, to analyze them for chemical and radiochemical
composition and to determine certain of their physical properties, including
distributions of particle sizes.
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DESCEKIPTICN AND EXPERIMENTAL PROCEDURES
Two YFNB barges and three pontoon rafts were anchored in Bikini Lagoon.
YFNB-29 carried two standard platforms with major arrays of instruments and
YFNB-13 carried one.
Each major array consisted of four open-close total
collectors, two always-open total collectors, one incremental collector, one
gamma intensity vs time recorder, and one wind speed and direction recorder.
The arrays on the barges were fully automatic.
Each pontoon raft carried
an always-open total collector, a time of arrival detector and a film pack
to measure total dose.
An array of 16 skiffs was deep~sea anchored by Project 2.62 between 10
and 30 miles from ground zero in the expected fallout ares.
Each carried a
minor arraye
YAG-39 was located approximately 25 miles, YAG-4O approximately 40 miles
and LST-611 approximately 60 miles from ground zero; all, however, were at
different azimuth angles.
Each wes extensively instrumented with a major
array supplemented by incremental collectors and high volume filter units.
COPIED BOE
LANL &C
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