Methodology of retrospective investigation on external dose of the downwind area in Jiuquan Region, China.
Retrospective Dosimetry : Physical and Biological Aspects. International Workshop. Tianjin, CHN, 1997/10/14.
In order to know the cumulative effective dose from the Chinese nuclear tests (CNT) to the population living in the downwind area of the CNT site, and any possible health effects attributable to the tests, an investigation was carried out in the Jiuquan Region, the closest area downwind of the site, during 1987-1992.
Both laboratory gamma ray spectrometry and in situ gamma ray spectrometry techniques were employed for the determination of the total inventory of 137Cs in the soil at 59 investigation sites.
The net cumulative 137Cs deposition from the CNT is estimated for each site after subtracting the contributions of the atmospheric fallout and others.
The radionuclides dating technique was used for estimating the time sequences of 137Cs deposition in a local lake.
The measurement of absorbed dose rate in the air was performed with portable dosemeters and checked with environmental LiF TLD dosemeters.
The external dose from the CNT is estimated based on the determinations of net 137Cs inventory in the soil of the region.
Mots-clés Pascal : Dosimétrie, Méthodologie, Dose cumulée, Dose efficace, Chine, Asie, Spectrométrie gamma, Technique, Césium, Impact environnement, Essai nucléaire
Mots-clés Pascal anglais : Dosimetry, Methodology, Cumulated dose, Effective dose, China, Asia, Gamma spectrometry, Technique, Cesium, Environment impact
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0518238
Code Inist : 002A08F05. Création : 23/03/1999.