410421
UASG 81-20
Castle-Bravo Air Concentration and Deposition
Patterns from a 3-D Particle:n-Cell Coce
by
Kendall R. Peterson
May 18, 1931
ABSTRACT
.
The MATHEW-ADPIC code suite has been extensively modified to give the
total external dose from the detonation of the Castle-Bravo nuclear test at Bikini
Atoll until evacuation of the innabitants of nearoy atolls. The advantages of this
code suite is that it uses all the observed winds (in a mass-corservation sense) at and
after the detonation to provide dose rates and doses due to passage of the debris
clouc and to the time-integrated deposition up to evacuation time.
Previous
assessments have given the fallout pattern (deposition only) at time H+l hours.
The oresent code formulation gives excellent agreement with the estimated
total external dose (based on measurements) to oeople on Rongelap and ilinginae
atolls.
BEST COPY AVAILABLE
<\orck performed under the auspiees af tne
Contract No. W-T4I05-ENG-48.
U. §. Department of Energy under