التفاصيل البيبلوغرافية
| العنوان: |
41Ca, 14C and 10Be concentrations in coral sand from the Bikini atoll |
| المؤلفون: |
Vasily Alfimov, Lukas Wacker, Johannes Lachner, Tim Schulze-König, Marcus Christl, Irka Hajdas, Peter W. Kubik, Hans-Arno Synal |
| المصدر: |
Journal of Environmental Radioactivity |
| سنة النشر: |
2013 |
| مصطلحات موضوعية: |
Nuclear explosion, 010504 meteorology & atmospheric sciences, Health, Toxicology and Mutagenesis, Castle Bravo, Atoll, 010502 geochemistry & geophysics, 01 natural sciences, Calcium Carbonate, Impact crater, Neutron flux, Radiation Monitoring, Environmental Chemistry, Animals, Waste Management and Disposal, 0105 earth and related environmental sciences, Radioisotopes, geography, Nuclear Weapons, Dosimeter, geography.geographical_feature_category, Isotope, Chemistry, Radiochemistry, General Medicine, Anthozoa, Pollution, Coral sand, Beryllium, Micronesia, Radioactive Pollutants |
| الوصف: |
Activation measurements of materials exposed to nuclear bomb explosions are widely used to reconstruct the neutron flux for retrospective dosimetry. In this study the applicability of coral CaCO3 as a biogenic neutron fluence dosimeter is tested. The long lived radioisotopes 41Ca 14C and 10Be which had been produced in nuclear bomb explosions are measured in several coral sand samples from the Bikini atoll at the 600kV and 200kV AMS facilities of ETH Zurich. Elevated concentrations of all studied isotopes are found in a sample from the crater that was initially formed by the high yield nuclear explosion Castle Bravo in 1954 and that had been used as site for several tests afterward. The observed 14C concentration is considered too large to originate from neutron irradiation of CaCO3 alone. The relatively low concentration of 10Be found in the crater sample indicates that production of 10Be during nuclear bomb testing is generally minor. A simple neutron fluence reconstruction is performed on basis of the 41Ca/40Ca ratio. © 2013 Elsevier Ltd. |
| تدمد: |
1879-1700 |
| URL الوصول: |
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44d83afac366ec06c62fc62f75d57293
https://pubmed.ncbi.nlm.nih.gov/24378732 |
| حقوق: |
CLOSED |
| رقم الأكسشن: |
edsair.doi.dedup.....44d83afac366ec06c62fc62f75d57293 |
| قاعدة البيانات: |
OpenAIRE |
