Copier.
It is concluded that the 2x counter described is suitable for
counting large area sources up to 4 inches in diameter and can be
adapted to kx counting.
CWLR - 2272
-
SURVIVAL IN FALLOUT AREAS (U).
Harold E. Shaw, Captain, CmlC, February 1959.
UNCLASSIFIED
This report attempts to summarize, amplify and clarify the
current information available through participation in nuclear events and
subsequent evaluation of the data obtained.
The report consists of four sections:
1.
<A nontechnical summation of information on the characteristics
and method of formation of radioactive fallout.
2.
<A brief resume of the biological effects of fallout.
3.
A discussion of the basic principles involved in the
reduction of the hazards of radiologica@l fallout and the application of
these principles.
4,
<A summary of calculations useful in the evaluation of the
fallout hazard.
€s
CWLR - 2282
-
AN ACTIVATION-TYPE NEUTRON DETECTION SYSTEM AND ITS
CALIBRATION (U).
J. W. Kinch and D. L. Rigotti, July 1959.
CONFIDENTIAL - Formerly Restricted Data
This report describes a method for measuring neutron flux and
obtaining an indication of the neutron energy spectrum.
The conversion
of the flux and spectrum information to neutron dose is briefly discussed.
Some materials in which radioactive isotopes are produced as the result
of neutron-induced nuclear reactions can be used to measure neutron flux
and are called activation detectors.
Activation detectors whose reaction
cross section precludes the formation of a radioactive product with neutrons
other than those with energies greater than a certain value are called
threshold detectors.
report are:
qn
The neutron achavation detectors described in this
Aut97, pu239, Npe37, ye3 ’ s3¢ ana 2r%®,
The calibration of these detectors is accomplished by the
evaluation of a constant which accounts for counting geometry, cross