Ученые из Национального управления океанических и атмосферных исследований США (NOAA) обнаружили в атмосфере над Алеутскими островами аэрозольную частицу, содержащую уран-235.
Об этом сообщает ZIK со ссылкой на statuspress.
Алеутские острова образуют дугу от юго-западной части полуострова Аляски до основания полуострова Камчатка и входят в состав американского штата Аляска.
На высоте в семь километров над островами опытный самолет Национального управления океанических и атмосферных исследований США обнаружил атмосферную аэрозольную частицу, обогащенную ураном, используемым в ядерном топливе и бомбах.
Ученые обнаружили такую долю впервые за 20 лет наблюдений, поэтому не на шутку встревожились.
Уран-235 – радиоактивный изотоп, который никогда не встречается в атмосферных аэрозолях, поэтому специалисты NOAA отрицают возможность происхождения загадочной частицы из природного источника.
Поскольку частицу обнаружили недавно, это исключает аварии 2011 года на японской АЭС «Фукусима-1», как возможный ее источник.
Американцы считают наиболее вероятной причиной появления в атмосфере над Алеутскими островами радиоактивной частицы – нарушение условий хранения обогащенного урана, в результате которого радионуклиды поднялись в атмосферу над Тихим океаном.
Данные о направлении ветра явно указывают на такие азиатские страны, как Северную Корею и Китай.
Обогащенная ураном-235 частица не представляет опасности для людей.
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