UASG 81-290
Castle-Bravo Air Concentration and Deposition
Patterns from a 3-D Particlein-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 inhabitants of nearby atolls. The advantages of this
code suite is that it uses all the observed winds (in a mass-conservation sense) at and
after the detonation to provide dose rates and doses due to passage of the debris
cloud and to the time-integrated deposition up to evacuation time.
Previous
assessments have given the fallout pattern (deposition only} at time H+tl hours.
The present code formulation gives excellent agreement with the estimated
total external dose (based on measurements) to people on Rongelap and Ailinginae
atolls.
=Sorx performed under the auspices of the U. S. Department of Energy under
Contraet No. W-7405-ENG-48.