Studies of the Core Conditions of the Earth and Super-Earths Using Intense Ion Beams at FAIR

Journal Article · Fri Sep 01 00:00:00 EDT 2017 · Astrophysical Journal, Supplement Series

DOI:https://doi.org/10.3847/1538-4365/AA813E· OSTI ID:22661099

Tahir, N. A.; Neumayer, P.; Bagnoud, V. ^[1]; Lomonosov, I. V.; Shutov, A. ^[2]; Borm, B. ^[3]; Piriz, A. R.; Piriz, S. A. ^[4]

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1. GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, D-64291 Darmstadt (Germany)
2. Institute of Problems of Chemical Physics, Russian Academy of Sciences, Institutskii pr. 18, 142432 Chernogolovka (Russian Federation)
3. Goethe-Universität Frankfurt, D-60438 Frankfurt (Germany)
4. E.T.S.I. Industriales, Universidad de Castilla-La Mancha, E-13071 Ciudad Real (Spain)

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.

• OSTI ID: 22661099
• Journal Information: Astrophysical Journal, Supplement Series, Vol. 232, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ANTIPROTONS
COMPUTERIZED SIMULATION
EQUATIONS OF STATE
EXPERIMENT DESIGN
EXPERIMENT PLANNING
HEATING
HEAVY IONS
ION BEAMS
IRON
LAYERS
LIQUIDS
PHASE DIAGRAMS
PLANETS
PLASMA
SIS SYNCHROTRON
SOLIDS
URANIUM