pe
in return exposure was used to increase the in-cloud exposure
:
co
=
and hence the sample collected et
, the ratio between the
-
aaa
.
.
external exposure and that of the shielded personnel was found
to be 3.0.
[aime
it was possible confidently to plan on an
external expovare on landing of about 9 roentgens because an
in-flight confirmation of this ratio was.available from a. proto=
type integrating electronic dosimeter suppliedby H Division,
LASL.
Unlike the external dosimeter (Integron) ordinarily used
for exposure control, this dosimeter is equipped with a small
chamber which can be located in the film badge position on
flight personnel with its dosage read on an external meter.
Its
excellent energy response characteristics as well as its good
correlation with film badge ratios indicate that this prototyve
could be used vary satisfactorily to control. sampling exposures.
The low samples obtained by the two B-36's are thought
to be due to the effects of "cold saturation" et extreme eltitude
on the lubricant used on the filter units vhich resulted in their
mal-function.
Corrective measures have been taken to avoid these
effects on future missions. An additional decrease in the size of
the second B-36 sample was caused by wide dispersal of the cloud
by H+7 hours, the delay beyond the normal sampling time of H+4+
hours being caused by mechanical aireraft troubles.
The study of the spectral distribution of gamna photen
within the bomb cloud has been continued.
LANL RG.”
Results fronZe