Order number 940406-165953-13
-001-001
page 6
set 5 with 341 of 341 items
SULFUR; GOLD; SHRIMP; RUNT;ALARM CLOCK;
ZOMBIE
Item 10
150.
110.
72.
710.
371.
34.
REPORT NUMBER
WT--106
PRIMARY TITLE (M)
Long-distance measurement of energy yield of an
atomic explosion. Annex 1.12 [of] Scientific Director’s
report of atomic weapon tests at Eniwetok. Operation
Greenhouse
PERSONAL AUTHOR/AFFIL Hudgins,
CORPORATE SOURCE
A.J.
California Univ.,
Lawrence Radiation Lab.
PUB. DATE (YYMMDD)
CLASSIF. LEVEL TEXT
Berkeley,
CA
(United States).
511000
Secret
36. CLASSIF. CATAGORY TEXTRestricted Data
950. ABSTRACT
The energy yield of an atomic explosion has been
determined at long distance by measuring the time
variation of the light from the explosion and applying
an empirical formula which relates this to the energy
yield. The light was detected by an RCA 5819
photomultiplier tube and was recorded on a magnetic-tape
recorder. Measurements at Shot Easy were made from a
C-54 airplane flying at 12,500 ft at a distance of 630
Miles northwest of Eniwetok. The time to the minimum of
light intensity was 23.5 {+-} 0.8 msec. The peak
intensity of the flash above the ambient was measured to
be
801.
1.7 millicandles/ft{sup 2}.
This experiment
indicated
that energy yield can be measured at a distance greater
than 630 miles at night. Possible propagation mechanisms
are discussed. Studies of the maximum range in daylight
and of improvements in technique are suggested.
KEYWORD (S)
GREENHOUSE; EASY BURST; YIELD; LONG-RANGE DETECTION;
OPTICAL DETECTION; MEASUREMENT
Item 11
150.
110.
REPORT NUMBER
UWEL--36
PRIMARY TITLE (M)
710.
CORPORATE SOURCE
371.
PUB.
34.
36.
unit,
Coll.
DATE (YYMMDD)
CLASSIF.
CLASSIF.
950. ABSTRACT
9003203
LEVEL TEXT
Operations outline for program 19, Marine survey
of Operation Castle
Washington Univ., Seattle, WA (United States).
of Fisheries
540215
Secret
CATAGORY TEXTRestricted Data
Plans are outlined for a study of radiological
problems before and after Operation Castle. These
studies were to be continued for one year. Spot checks
were aiso planned on the amounts and distribution of
radioactive materials in the fauna and flora of Bikini
Atoll during the year.