The equation of state package FEOS for high energy density matter

Faik, S.; Tauschwitz, A.; Iosilevskiy, Igor

doi:10.1016/j.cpc.2018.01.008

Cited by 91 publications

(41 citation statements)

References 23 publications

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“…Ideally, the gas density in our model should be provided by a real mixed-composition equation of state (e.g., Saumon et al 1995;Faik et al 2018) and account for dissociation, ionization A&A 634, A15 (2020) T disk,5.2 , ρ disk,5.2 Disk temperature and density at 5.2 AU 150 K, 5 × 10 −11 g cm −3 ( f )…”

Section: Benacquista 2013)mentioning

confidence: 99%

How planets grow by pebble accretion

Brouwers

Ormel

2020

A&A

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Context. Proto-planets embedded in their natal disks acquire hot envelopes as they grow and accrete solids. This ensures that the material they accrete – pebbles, as well as (small) planetesimals – will vaporize to enrich their atmospheres. Enrichment modifies an envelope’s structure and significantly alters its further evolution. Aims. Our aim is to describe the formation of planets with polluted envelopes from the moment that impactors begin to sublimate to beyond the disk’s eventual dissipation. Methods. We constructed an analytical interior structure model, characterized by a hot and uniformly mixed high-Z vapor layer surrounding the core, located below the usual unpolluted radiative-convective regions. Our model assumes an ideal equation of state and focuses on identifying trends rather than precise calculations. The expressions we derived are applicable to all single-species pollutants, but we used SiO2 to visualize our results. Results. The evolution of planets with uniformly mixed polluted envelopes follows four potential phases. Initially, the central core grows directly through impacts and rainout until the envelope becomes hot enough to vaporize and absorb all incoming solids. We find that a planet reaches runaway accretion when the sum of its core and vapor mass exceeds a value that we refer to as the critical metal mass – a criterion that supersedes the traditional critical core mass. The critical metal mass scales positively with both the pollutant’s evaporation temperature and with the planet’s core mass. Hence, planets at shorter orbital separations require the accretion of more solids to reach runaway as they accrete less volatile materials. If the solids accretion rate dries up, we identify the decline of the mean molecular weight – dilution – as a mechanism to limit gas accretion during a polluted planet’s embedded cooling phase. When the disk ultimately dissipates, the envelope’s inner temperature declines and its vapor eventually rains out, augmenting the mass of the core. The energy release that accompanies this does not result in significant mass-loss, as it only occurs after the planet has substantially contracted.

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Section: Benacquista 2013)mentioning

confidence: 99%

How planets grow by pebble accretion

Brouwers

Ormel

2020

A&A

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“…For instance, the insulating solid to metallic solid transition predicted in Refs. [6,12,54] is incorporated into the phase diagram proposed by Kerley and Chhabildas [54] and produces a change in slope along the Hugoniot at 4.3-5 Mbar. Similarly, but in the opposite direction, the Hugoniot calculated from SESAME table 7834 ( Figure 7) shows a small kink in the Hugoniot curve at ∼9 Mbar that is not present in SESAME table 7830.…”

Section: Discussionmentioning

confidence: 99%

“…In the simulations, we used the SESAME table 3100 for nickel and the SESAME table 7770 for parylene [45] . As for diamond, we tested different EOS tables coming from the SESAME database [45] , from QEOS [53] and FEOS [54] , in all cases setting the initial density at ρ 0 = 3.515 g/cm 3 . Figure 5 shows the density map and the pressure map from MULTI 1D simulation reproducing shot 15.…”

Section: Hydro Simulationsmentioning

confidence: 99%

Reflecting laser-driven shocks in diamond in the megabar pressure range

Jakubowska

Mancelli

Benocci

et al. 2021

High Pow Laser Sci Eng

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In this work we present experimental results on the behavior of diamond at megabar pressure. The experiment was performed using the PHELIX facility at GSI in Germany to launch a planar shock into solid multi-layered diamond samples. The target design allows shock velocity in diamond and in two metal layers to be measured as well as the free surface velocity after shock breakout. As diagnostics, we used two velocity interferometry systems for any reflector (VISARs). Our measurements show that for the pressures obtained in diamond (between 3 and 9 Mbar), the propagation of the shock induces a reflecting state of the material. Finally, the experimental results are compared with hydrodynamical simulations in which we used different equations of state, showing compatibility with dedicated SESAME tables for diamond.

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“…In the simulation, we utilized the SES-AME tables of the following materials which consist of our target SESAME table 7770 for parylene [37], SESAME table 2700 for gold [37], SESAME 7385 for quartz [37], and SESAME tables 7150, 7153, and 7154 for water [37]. Concerning the water EOS, we compared different models of EOS tables coming from the SESAME database [37], from QEOS [38], and from FEOS [46], in all cases setting the initial density at ρ 0 � 0.98 (g/cm 3 ) in order to check the validity of the EOS data.…”

Section: Hydro Simulationsmentioning

confidence: 99%

Shock Hugoniot Data for Water up to 5 Mbar Obtained with Quartz Standard at High-Energy Laser Facilities

et al. 2021

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In this work, we present experimental results on the behavior of liquid water at megabar pressure. The experiment was performed using the HIPER (High-Intensity Plasma Experimental Research) laser facility, a uniaxial irradiation chamber of GEKKO XII (GXII) at the Institute of Laser Engineering (ILE), and the PHELIX at GSI (GSI Helmholtz Centre for Heavy Ion Research), a single-beam high-power laser facility, to launch a planar shock into solid multilayered water samples. Equation-of-state data of water H 2 O are obtained in the pressure range 0.50–4.6 Mbar by tuning the laser-drive parameters. The Hugoniot parameters (pressure, density, etc.) and the shock temperature were simultaneously determined by using VISAR and SOP as diagnostic tools and quartz as the standard material for impedance mismatch experiments. Finally, our experimental results are compared with hydrodynamic simulations tested with different equations of state, showing good compatibility with tabulated SESAME tables for water.

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The equation of state package FEOS for high energy density matter

Cited by 91 publications

References 23 publications

How planets grow by pebble accretion

How planets grow by pebble accretion

Reflecting laser-driven shocks in diamond in the megabar pressure range

Shock Hugoniot Data for Water up to 5 Mbar Obtained with Quartz Standard at High-Energy Laser Facilities

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