ION
12682)
10 July 192
aad
MEMORANDUM FOR:
A. C. Graves
a3
FROM:
W. E. Ogle
SUBJECT;
RECENT CHANGES IN THE IVY PROGRAM
SYMBOL:
J -1293L
e
: *
_
PROGRAM 1 - RADIOCHEMISTRY
Project 1.3 - Sample Collecting
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Dr. Harold Plank is now making arrangements for comparatively
simple\back-ups on the air sampling for Mike Shot. He plans to arrange
containérs of some sort which will allow for the collection of radioactive
water after the shot if there is difficulty with the airplane sampling.
cox
This water sampling would not be by remote control.
a
to be on Engebi.
a
He also plans to-
arrange for two blower-type air samplers, one to be on Bogallua, the other
The details of these collectors are not yet available.
PROGRAM 2 - PROGRESS OF THE NUCLEAR REACTION
Projects 2,2, 2.3, and 2.4 have been gr atly changed from the techThe samequantit 8) i.e., time between the
nigues originallyplanned,
However, instead of the signals being tran fitted by light from the Domb
to the recording station, they will now be transmitted by gamma rays. In
order to transmit the signal that fergby gamma sayy , it will be necessary
to replace the air between bomb a
rise of the reaction
gemma rays formed in
the uranium
ation with helium. The
will be observed by
e bomb. The propagation
of the reaction will be observed by@anex-type experiments.
Further
detaile of this experiment are available in the J-Division monthly report
for June.
Because of the replacement of air b
to measure t
been added as Project 2.6,
fa
io
a Tenex-t
experiment
The project director is Dr. E. H. Krause.
NCELLED
CLASSIFICATION CA
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