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Radon Testing Laboratory
L. L. Stockman and
G. M. Temmer
This laboratory is concerned with the testing of room air and
breath samples for the presence of radon, The assays of ores
and sludges are also carried out (AEC Project 2908).
he
Alpha Ray Measurement Laboratory
G. M, Temmer
This laboratory calibrates alpha ray standards chiefly for use
with monitoring instruments, In addition, equipment is available
for the resolution of alpha rays of various energies and an
investigation is also being carried out into the development
of scintillation crystal counting equipment for the determination of the radon content of room air and breath samples,
De
Radioisotopes Laboratory
H, H. Seliger
The function of this laboratory is to standardize artificially
prepared radioactive nuclides and it chiefly relies upon the
method of 477 counting. The routine distribution of P-32 ani
I-131 standards every three months is a regular part of this
laboratory's program and it is hoped soon to set up standards
of a great many other isotopes including Na-24, Sr-90, Au-198
and T1-204.
An ionization chamber is also to be used for the routine
standardization of gamma ray emitters.
Beta Ray Applicator Program
(AEC Project 2955)
T. I. Davenport
Using an extrapolation type ionization chamber in conjunction
with a vibrating reed electrometer, a standard method for the
measurement of RaD+E and Sr-90 beta ray opthalmic applicators
has been set up. Preliminary results have been inter-—compared
with Dr. Failla's laboratory in New York and with the National
Research Council Laboratory in Ottawa. The only discrepancy
which exists is that arising from the varying criteria adopted
by the different laboratories regarding the area of the applicator
to be measured.