Order number
page 19
940406-171827
set 5 with ‘OFFICIAL BSE ONLY
pressure time information in the moderate to high
pressure region from the detonation of twol500-ton
hemispherical TNT charges. Field testing of
new
instrumentation systems for Operations Bass Drum and
Distant Plain was carried out in fulfillment of Project
1.4 objectives. Electronic and self-recording
801.
KEYWORD (S)
instrumentation systems were used to record the air
blast parameters along the land surface in the range
from 20 to 9000 feet from ground zero. The air blast
data was found to correlate with Operation Snow Ball;
minor deviations occurred in the low pressure region
where wind conditions altered the magnitude of the blast
wave.
SAILOR HAT/instrumentation ;SAILOR HAT/blast
measurements
; INSTRUMENTATION; BLAST WAVES; TNT;MIDGET
DISTANT PLAIN; SNOW BALL
Item
150.
110.
70.
710.
FLY;
32
REPORT NUMBER
PRIMARY TITLE (M)
_
5.1:
WT--28
Development of the Chemical Corps dosimeter. Annex
Annex C
[of]
scientific director’s
weapon tests at Eniwetok,
PERSONAL AUTHOR (M)
CORPORATE SOURCE
Wilson,
G.B.
1951.
report of atomic
Operation Greenhouse
Chemical and Radiological Labs., Army Chemical
Center,
MD
(USA)
371. PUB. DATE (YYMMDD)
520100
34. CLASSIF. LEVEL TEXT
Unclassified
950. ABSTRACT
The development of the Chemical Corps
color-changing radiation dosimeter to be tested in
Operation Greenhouse is summarized. The absorption of
radiation by moist chloroform results in the formation
of hydrochloric acid which in turn produces color
changes in the alkaline indicator dyes, neutral red (NR)
and the potassium salt of tetrabromophenolphthalein
ethyl ester (TBP). Two different types of dosimeters,
which are identical in construction, were developed. The
more sensitive type or low range dosimeter uses NR as an
indicator and covers the dosage range from 50 r to 400 r
in four steps while the slightly less sensitive high
range dosimeter uses TBP as an indicator and covers the
dosage range from 100 r to 600 r in four steps. Each
instrument consists of an aluminum container containing
four neutral glass bottles with plastic scfew caps. Each
cap is
colored to match the bottle contents
after the
dosage indicated by the bottle has been received. The
aluminum container consists of a double tube arrangement
which permits four small windows to be opened or closed
by rotation of the inner tube. Details for the
preparation of chemicals are given.
5003393
OFFICIAL USE ONLY