Document Details
PURL
Title:
KINETIC BEHAVIOR OF A URANIUM-PLUTONIUM-D2O SYSTEM
Author(s):
Subject Terms:
FUEL FABRICATIONFUELS AND MATERIALS ENGINEERINGPLUTONIUMPLUTONIUM RECYCLEREACTIVITYREACTOR EXPERIMENTURANIUMWATER SYSTEMS
Document Location:
DOE Public Reading Room - Hanford Battelle P.O. Box 999 MS H2-53 Richland WA 99352 (509)372-7443
Document Type:
REPORT
Publication Date:
1957 Mar 11
Declassification Status:
Declassified
Document Pages:
24
Accession Number:
RL-1-365265
Document Number(s):
HW-48907
Originating Research Org.:
GE - HAPO
OpenNet Entry Date:
2004 Feb 24
OpenNet Modified Date:
2015 Aug 24
Description/Abstract:
THE STUDY OF THE KINETIC BEHAVIOR OF A D20 MODERATED NUCLEAR REACTOR FUELED WITH A COMBINATION OF U 235 AND PU 239 IS PRESENTED. FROM THIS SYSTEM THERE ARE PRIMARY NEUTRONS FORMED FROM FISSIONS AND FROM THE INSTANTANEOUS D(GAMMA, N)H REACTION IN THE MODERATOR. THE TRESHOLD FOR THE D(GAMMA,N)H IS AT APPROXIMATELY 2.2 MEV, SO A CONSIDERABLE FRACTION OF THE NEUTRONS IN THE SYSTEM HAVE THEIR ORIGIN IN THE MODERATOR. THE REACTOR TRANSIENTS ARE NOT PRIMARLY CONCERNED WITH THE PROMPT NEUTRONS BUT WITH THE NEUTRONS THAT MAKE THEIR APPEARANCE AT A TIME LATER THAN THAT OF THE ORIGINAL FISSION. THE DELAYED NEUTRONS ARE FROM THE NEUTRON-RCIH FISSION FRAGMENTS AND FROM THE DELAYED GAMMA EMISSION FROM THE FRAGMENTS. THESE NEUTRONS WILL BE TERMED DELAYED NEUTRONS AND WILL BE THOSE NEUTRONS THAT ARE FORMED AT LEAST 0.1 SECONDS AFTER THE ORIGINAL FISSION. THE ANALYTICAL DISCUSSION OF THIS PROBLEMS IS PRESENTED.