DURING YOUR LAST VISIT, WE DISCUSSED WAYS BY WHICH THIS PROGRAM WOULD BE STARTED.

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03166A000700020006-5
• Release Decision: RIFPUB
• Original Classification: K
• Document Page Count: 2
• Document Creation Date: December 23, 2016
• Document Release Date: April 25, 2014
• Sequence Number: 6
• Publication Date: March 5, 1962
• Content Type: LETTER

Declassified and Approved For Release 2014/05/01 : CIA-RDP78-03166A000700020006-5
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5 March 1962
Progress Report No. 1
Project 1158-5
Dear Sam:
During your last visit, we discussed ways by which this program would
be started. The camera was found to be not satisfactory in its present form.
For this reason, we had to build a special type of sample centering mechanism
to be placed in the present camera. This device will enable us to center
accurately the sample in the collimating device so as to permit the use of
very small amounts of material, as well as to enable us to relocate the position
of the sample accurately each time a change is made in the material. The
device is designed so that the sample container may be removed for loading
and replacing without disturbing the alignment. This becomes extremely
important because of the nature of the microanalysis. Our first sample holder
will have a 16 mil hole drilled for containing the sample. We will attempt to
reduce this diameter to 4 mil, which should be the limit with the present setup.
If we are successful in obtaining x-ray diffraction patterns at this lower limit,
we should be able to look at the very small amounts of material we are antici-
pating for direct analysis.
At this writing, we have not received the device from the shop, but are
using the time to get everything set up so that we may proceed in earnest. We
intend to use the pure materials first, to obtain standard patterns, and we will
dilute these materials with 1VEg02 of suitable particle size in order to get the
Declassified and Approved For Release 2014/05/01 : CIA-RDP78-03166A000700020006-5
Declassified and Approved For Release 2014/05/01: CIA-RDP78-03166A000700020006-5
Progress Report No. 1
Project 1158-5
-2- 5 March 1962
proper dilution effects which will be representative of the total sample which
we are to analyze eventually.
Alter obtaining the films, we will measure them with one of our densi-
tometers and prepare a film system giving the interplanar spacings (d/n) versus
the relative intensity of the diffraction ring. These should serve as indexing
data for future reference.
Conventional laboratory supplies appear to be quite large for this work,
and therefore we are miniaturizing even these to be suitable for the analysis at
hand.
Brad has been assigned Principal Investigator for this program, and is
being supported in the laboratory work by Dave. I am taking more than an
administrative interest in the work and will be much closer to the laboratory
procedures and interpretations than on previous programs.
When everything can be more or less reduced to a stable procedure, we
should be in good shape to routinely investigate small samples.
Sincerely,
Declassified and Approved For Release 2014/05/01: CIA-RDP78-03166A000700020006-5