reposirony NAKA - Collage Aric
,
COLLECTION R6_ 326
Ub6- 5! Secretary
(NW3 -326- 93-007)
409453
D, Froman and A. Graves
FoLper 47/.6 (4-21-47
Sandstone
l.
Vol. |
R
7 October 1947
Radiocchemical Analysis of Air and Ground Samples
(a)
Air samples - Determination of efficiency, This is the most reliable
and accurate measurement of bomb efficiency.
,
(b)
Ground samples - Determination of efficiency radiochemically if
collection of air samples fails, Determination of the isotopic
constitution of the residual ficsionable material necessary in
order to calculate the efficiency accurately from air sample
measurements, A plan to avoid the necessity for ground samples
on the letter count will be tried in the forth coming tests, but
until it has proved satisfactory the ground samples will be required.
2.
Blast Measurements
(This may be of value to construction engineers as the shock wave
properties of atomic bomb explosions cannot be reproduced by means of high
explosives).
Traditional necessity for recording blast and blest effects of all
mighty explosions,
3,
~7-48>
Determination of the TINT equivalent and efficiency of the bomb in the
event of failure of the radiochemistry, Determination of peak pressures
as a function of distance and pressures as a function of time and distances.
\
High-Speed Photography
Determination of the efficiency of the bomb by the rate of growth of
the ball of fire in case of failure of the radiochemical determination, and
as a check on the blast measurements,
Determination of the shock velocity near the bomb for both academic
interest, direct check on one type of blast measurements, and to aid
determining scaling laws for use with high explosive charges.
in
Recording of the formation and movement of the cloud for purposes
associated with national defense and with meteorology.
Determination of the velocity of high speed jets produced by the shock
pressures, If sufficiently high speeds can be produced by nuclear explosions, there are two possible applications in bomb design,
Traditional necessity for recording so spectacular an event as an
atomic bomb explosion,
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BY: ROBERT’ fhe WT.
nmesEtnaa anetsngly ee ae
BOX No, (27
Objectives of Proposed Experiments for Bomb Tests