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Studies of the Core Conditions of the Earth and Super-Earths Using Intense Ion Beams at FAIRстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 19 октября 2017 г.
- Авторы: Tahir N.A., Lomonosov I.V., Borm B., Piriz A.R., Shutov A., Neumayer P., Bagnoud V., Piriz S.A.
- Журнал: Astrophysical Journal, Supplement Series
- Том: 232
- Номер: 1
- Год издания: 2017
- Издательство: University of Chicago Press
- Местоположение издательства: United States
- Первая страница: 1
- Последняя страница: 15
- DOI: 10.3847/1538-4365/aa813e
- Аннотация: Using detailed numerical simulations, we present the design of an experiment that will generate samples of iron under extreme conditions of density and pressure believed to exist in the interior of the Earth and interior of extrasolar Earth-like planets. In the proposed experiment design, an intense uranium beam is used to implode a multilayered cylindrical target that consists of a thin Fe cylinder enclosed in a thick massive W shell. Such intense uranium beams will be available at the heavy-ion synchrotron, SIS100, at the Facility for Antiprotons and Ion Research (FAIR), at Darmstadt, which is under construction and will become operational in the next few years. It is expected that the beam intensity will increase gradually over a couple of years to its maximum design value. Therefore, in our studies, we have considered a wide range of beam parameters, from the initial beam intensity (“Day One”) to the maximum specified value. It is also worth noting that two different focal spot geometries have been used. In one case, a circular focal spot with a Gaussian transverse intensity distribution is considered, whereas in the other case, an annular focal spot is used. With these two beam geometries, one can access different parts of the Fe phase diagram. For example, heating the sample with a circular focal spot generates a hot liquid state, while an annular focal spot can produce a highly compressed liquid or a highly compressed solid phase depending on the beam intensity.
- Добавил в систему: Ломоносов Игорь Владимирович