UNCLASSIFIED
It was found that there was no significant difference between
results obtained from threshold detectors exposed in the pressed and
sintered boron-10 spheres and the results obtained from threshold
detectors exposed in steel spheres with boron-10 filled peripheries.
The cadmium spacers which separate the threshold detectors from
flux and spectrum as measured by the threshold detectors within the sphere.
A thirty per cent attenuation factor is observed for the sulfur threshold
detector.
A quantitative attenuation factor was not obtained for
wee
There is a real effect of the boron-10 sphere on the neutron
we meee
each other in the boron-10 sphere have no significant effect on the
measured neutron fiux and spectrum.
neptunium-237 and uranium-238 because of the poor reproducibility of the
data. Further, experimentation is necessary before a reliable attenua-
tion factor can be applied for these two threshold detectors.
ory
The calibration of an automated counting system contained
within a mobile laboratory is included as an appendix.
‘re
NDL-TR-10
-
THE IDENTIFICATION OF SOME PRODUCTS PRODUCED ON STORING
4
TRICHLOROETHYLENE (U).
R. A. Sasse, N. Klein, and J. Harris, September 1961.
UNCLASSIFIED
(U)
Trichloroethylene, which had been stored for an extended period
in contact with aqueous NaOH, was found to acidify pure water.
Experiments
were carried out to determine whether this effect was due to spontaneous
hydrolysis or to extraction of acid produced during storage.
re
Samples of the stored trichloroethylene and freshly purified
trichloroethylene were stirred with conductivity water, and pH was
measured as a function of time.
Freshly purified trichloroethylene did
not decrease the pH of water.
The rate and degree of extraction of
acids from the stored trichloroethylene varied with the initial pH.
po
rola y
g
Hyarochloric and glyoxylic acid were identified among the acids
produced during the extended storage of trichloroethylene with base.
UNCL SplFIED
83
in
B4