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Projeet 22,1 - Measurement of Alpha and Booet - L.F. Vouters
BASPAIMENTAL
The gemma rays produced by the sucleer reaction vere detected by
flucr-photeeel] detectors loested in a lead lined “doghouse” 3,390 feet
from the sero point.
A 27 foot lead pipe served to ecllimate the game
rays onto an array of four fluores.
The four fluores vere positioned in
tandem along the gamme path end vere observed by a total of three photo-
diodes end four photomultiplier units. Costinations of game sttenustors:
betveen flucrs and optiesl attenuators betveen different detector units
on the seme fluor enabled the attainment of complete coverage from the Jéth
‘
generation level to well above the peak expected ,anme signs).
The detector
outputs were transmitted by ceble to recording ceciliogrephs located in
the tlockhouse where caperas provided a permanent file record of the
signals.
BESULIS
The reaction history experinent was successful in meqauring the high
explosive transit time and the reaction rate of ae
(i device.
trenait
The |
»
explosive transit time was measured to >
oui the X-unit pulse to the time of 50th generation lev-)
of the fission reaction.
es
oT
en
& YAILADLS SOpy
Prelininary reaction history results are indicated in Fig. 22.1-1
and 22.1-2. Pig. 22.1-1 fe a plot of the gama flux (gems mev per on*. 00) incident at the detector station ve time as ottained from a slope -
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amplitude fit of the individual pleces of data. Pig. 22.1-2 is an elphe
wa time curve derived from Pig, 22.1-1,
Note that neither curve has
.
ee
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