Nal(T1l)
scintillation spectrometers,
instrumental analysis using Ge(Li)
for radioactive zirconium and
semiconductor detectors. Presently
the tritium-analyzing procedure is under discussion. As the manuals for
individual analyses have been instituted, the ‘'’general manual’’ for
applying those has become to be required. The problems lie not in
individual procedures but in the purpose of radioactivity measurement,
monitoring method, and the evaluation of data obtained. The compilation
of the manual started in 1973, but now temporarily stopped because of a
new problem which is the opinion insisting that manual is to include
the procedures for the estimation of population exposure dose based on
the data obtained.
Major Descriptors: * ENVIRONMENT -- RADIATION MONITORING; *JAPAN --
RADIATION MONITORING; *NATURAL RADIOACTIVITY -- RADIATION MONITORING
Descriptors: CESIUM 137; CHEMICAL ANALYSIS; COBALT 60; IODINE 131; MANUALS;
RADIATION DETECTION; RADIOACTIVITY; STRONTIUM 90; TRITIUM; ZIRCONIUM 95
Broader Terms: ALKALI METAL ISOTOPES; ALKALINE EARTH ISOTOPES; ASIA; BETA
DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CESIUM ISOTOPES;
COBALT ISOTOPES; DAYS LIVING RADIOISOTOPES; DOCUMENT TYPES; EVEN-EVEN
NUCLEI; EVEN-ODD NUCLEI; HYDROGEN ISOTOPES; INTERMEDIATE MASS NUCLEI;
INTERNAL CONVERSION RADIOISOTOPES; IODINE ISOTOPES; ISOMERIC TRANSITION
ISOTOPES; ISOTOPES; LIGHT NUCLEI; MINUTES LIVING RADIOISOTOPES;
MONITORING; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; RADIOACTIVITY;
RADIOISOTOPES; STRONTIUM ISOTOPES; YEARS LIVING RADIOISOTOPES;
ZIRCONIUM ISOTOPES
Subject Categories: 440101*
-- Radiation Instrumentation -- General
Detectors or Monitors & Radiometric Instruments
500300
-- Environment, Atmospheric ~- Radioactive Materials Monitoring
& Transport -- (-1989)
INIS Subject Categories: E41*
-- Particle & Radiation Detection &
Measuring Instruments & Methods
10/5/958
00362937
Author(s):
(Item 658 from file: 103)
ERA-03-025152; NTS-78-004852;
Levy,
Y.;
Miller,
D.S.;
INS-78-006196;
Friedman,
EDB-78~-051565
G.M.
Title: Fission- and alpha-track study of biogeochemistry of plutonium and
uranium in carbonates
of Bikini and Enewetak atolls.
1 July 1974--31 August 1977
Corporate Source:
of Geology
Publication Date:
Report Number(s):
Rensselaer Polytechnic
Sep 1977
C0O0-3462-14
INS
(US
Troy,
N.Y.
(USA).
Dept.
p 45
Contract Number (DOE): EY-76-S-02-3462
Note: Portions of document are illegible
Document Type: Report
Language: English
Journal Announcement: EDB7804
Availability: NTIS, MF AOl.
Subfile:
Inst.,
Summary report,
Atomindex
input);
NTS
(NTIS);
Abstracts); TIC (Technical Information Center).
Country of Origin: United States
Country of Publication: United States
ERA
(Energy Research
Abstract: Alpha emitters of pCi/g amounts have been detected with a
resolution of a few micrometers using a solid state track detector
{cellulose nitrate) to map the activity in a coral sample from Bikini.
Calibration methods used include: a Pu source of 0.15 ..mu..Ci in
conjunction with polycarbonate and CaCO/sub 3/ absorbers of different
thicknesses
(2 to 30 micrometers),
and a powdered coral sample which
oc
>
had been analyzed previously for alpha emitters by chemical methods in c>
conjunction with an alpha spectrometer. 0.04 mm/sup 3/ can be measured routinely; lower concentrations can be determined but with less
co
resolution. The alpha emitter concentration in CaCO/sub 3/ of the coral@
Favites virens from Bikini lagoon was analyzed by placing the detector tm
directly on the slab sample for thirty days. Analyses of sections and
thin sections of this coral slab cut perpendicular to one another, but
parallel to the direction of coral growth, give very different
concentrations and distributions of alpha emitters.;