Author(s):
Source:
Hisamatsu,
Health Phys.
S.
(Akita Univ.
(United Kingdom)
(Japan));
Publication Date: Aug 1978
p 301-307
Document Type: Journal Article
Language: English
Journal Announcement: EDB790
Subfile:
AIX
v 35:2.
Sakanoue,
Coden:
M.
HLTPA
TS?A
.
(non-US Atomindex input).
Country of Origin:
Japan
Abstract: The concentrations of /sup 239 +240/Pu and /sup 241/Am in the
debris from the second thermonuclear test detonation of the USA (Bravo)
were determined.
This debris, called Bikini Ash, was collected in 1954
on the deck of the Japanese fisherboat ’5th Fukuryu-Maru’ which was
located some 150 km to the east of Bikini Atoll at the time of the
thermonuclear test.
A portion of the 1954 sample was subjected to
radiochemical analysis in 1974.
The concentrations of /sup 239 +/ /sup
240/Pu and /sup 241/Am in th sample were determined to be 25.9 + - 1.7
and 12.9 + - 0.9 dis/min/mg, respectively. From these values, the ratio
of /sup 241/Pu//sup 239 +240/Pu at time zero was calculated to be 26 +
-
3,
and this ratio was
almost the same as
in the Mike thermonuclear
debris. The /sup 239 +240/Pu and /sup 241/am contents of the marine
sediment
samples
collected near Bikini Atoll were also analyzed,
anda
significant contamination with these nuclides was found to be still
remaining in this area.;
Major Descriptors: *AMERICIUM 241 -- RADIATION MONITORING; *PLUTONIUM 239
-- RADIATION MONITORING; *PLUTONIUM 240 -- RADIATION MONITORING;
*PLUTONIUM 241 -- RADIATION MONITORING; *SEDIMENTS -- RADIOACTIVITY;
*THERMONUCLEAR EXPLOSIONS -- FALLOUT DEPOSITS
Descriptors: BIKINI; JAPAN; NUCLEAR WEAPONS; SEA BED; SHIPS
Broader Terms: ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ALPHA DECAY
RADIOISOTOPES; AMERICIUM ISOTOPES; ASIA; BETA DECAY RADIOISOTOPES;
BETA-MINUS DECAY RADIOISOTOPES; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI;
EXPLOSIONS; FALLOUT; HEAVY NUCLEI; ISLANDS; ISOTOPES; MARSHALL ISLANDS;
MICRONESIA; MONITORING; NUCLEAR EXPLOSIONS; NUCLEI; OCEANIA; ODD-EVEN
NUCLEI; PLUTONIUM ISOTOPES; RADIOISOTOPES; WEAPONS; YEARS LIVING
RADIOISOTOPES
Subject Categories: 500300*
-- Environment, Atmospheric -- Radioactive
Materials Monitoring & Transport -- (-1989)
-- Environment, Aquatic -~ Radioactive Materials Monitoring &
Transport -- (1989)
450202
-- Explosions & Explosives -- Nuclear -~ Weaponry -INIS Subject Categories: B31*
-- Land
10/5/925
00546675
Author(s):
{Item 625 from file:
ERA-04-055602;
Greenhouse,
103)
INS-79-020166; EDB-79-126141
N.A.;
Miltenberger,
R.P.;
Lessard,
Title: External exposure measurements at Bikini Atoll
Corporate Source:
Brookhaven National Lab., Upton, NY
Publication Date: Jan 1979
p 27
Report Number(s):
BNL-51003
Contract Number
(DOE):
(-1989)
E.T.
(USA)
EY-76-C-02-0016
Document Type: Report; Numerical data
Language: English
Journal Announcement: EDB7910
Availability: Dep. NTIS, PC A03/MF AOl.
Subfile:
INS
(Technical
(US Atomindex input);
Information Center).
Country of Origin:
ERA
(Energy Research Abstracts);
TIC
United States
Country of Publication: United States
Abstract: External exposure rate surveys from 1975 to 1977 on the islands
Nam, Eneu and Bikini of Bikini Atoll gave average external exposure
rates of 24, 5.7, and 32 ..mu..R/hr respectively. The exposure rate on
Eneu Island is uniform, whereas those on Bikini and Nam range from 7.0
to 80. ..mu..R/hr. Based on an assumed living pattern at Bikini Island,
the adult male Bikinian is estimated to be in the presence of an
external radiation field corresponding to 16 ..mu..R/hr due to debris
and fallout from the 1954 BRAVO incident. This corresponds to a 30 year
9OCuUQLO
520300