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Title: An aerial radiological survey of Technical Area 15 and surroundings, Los Alamos National Laboratory, Los Alamos, New Mexico

Technical Report ·
DOI:https://doi.org/10.2172/6729564· OSTI ID:6729564

An aerial gamma survey of the entire Los Alamos National Laboratory and the adjacent area was flown in September 1982. The data from a part of the survey, Technical Area 15, are presented here. Other parts of the survey data that will complete the presentation will be published in a separate report. The gamma survey data show significant Pa-234m activity which implies U-238 activity above background levels. Concentration isopleths overlaid on aerial photographs of this area indicate the position and extent of this isotope. The inventory of Pa-234m (above background) is probably between 4 and 23 curies, depending on the actual vertical distribution of the Pa-234m in the soil. Isopleth maps of the natural background gamma exposure rates and the total exposure rates (natural plus exposure due to Pa-234m) are included. Implied exposure rates at 1 meter above the ground range from a minimum terrestrial component of 6{mu}R/h to 22{mu}R/h over areas where Pa-234m and the parent, U-238, exist. 1 ref., 5 figs., 3 tabs.

Research Organization:
EG and G Energy Measurements, Inc., Las Vegas, NV (USA). Remote Sensing Lab.
Sponsoring Organization:
DOE/DP
DOE Contract Number:
AC08-83NV10282
OSTI ID:
6729564
Report Number(s):
EGG-10282-1095; ON: DE90014193
Country of Publication:
United States
Language:
English