Search Results - "Ghosh, Dipta B."

A magma ocean origin to divergent redox evolutions of rocky planetary bodies and early atmospheres by Deng, Jie, Du, Zhixue, Karki, Bijaya B., Ghosh, Dipta B., Lee, Kanani K. M.

“…Magma oceans were once ubiquitous in the early solar system, setting up the initial conditions for different evolutionary paths of planetary bodies. In…”
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Insights into magma ocean dynamics from the transport properties of basaltic melt by Bajgain, Suraj K., Ashley, Aaron Wolfgang, Mookherjee, Mainak, Ghosh, Dipta B., Karki, Bijaya B.

“…The viscosity of magma plays a crucial role in the dynamics of the Earth: from the crystallization of a magma ocean during its initial stages to modern-day…”
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Computational Materials Design for Ceramic Nuclear Waste Forms Using Machine Learning, First-Principles Calculations, and Kinetics Rate Theory by Wang, Jianwei, Ghosh, Dipta B, Zhang, Zelong

“…Ceramic waste forms are designed to immobilize radionuclides for permanent disposal in geological repositories. One of the principal criteria for the effective…”
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Insights into core-mantle differentiation from bulk Earth melt simulations by Shakya, Abin, Ghosh, Dipta B., Jackson, Colin, Morra, Gabriele, Karki, Bijaya B.

“…The earth is thought to have gone through complex physicochemical changes during the accretion and magma ocean stages. To better understand this evolution…”
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Behavior and properties of water in silicate melts under deep mantle conditions by Karki, Bijaya B., Ghosh, Dipta B., Karato, Shun-ichiro

“…Water (H 2 O) as one of the most abundant fluids present in Earth plays crucial role in the generation and transport of magmas in the interior. Though hydrous…”
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Density‐Pressure Profiles of Fe‐Bearing MgSiO3 Liquid: Effects of Valence and Spin States, and Implications for the Chemical Evolution of the Lower Mantle by Karki, Bijaya B., Ghosh, Dipta B., Maharjan, Charitra, Karato, Shun‐ichiro, Park, Jeffrey

“…Density is a key property controlling the chemical state of Earth's interior. Our knowledge about the density of relevant melt compositions is currently poor…”
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Solid-liquid density and spin crossovers in (Mg, Fe)O system at deep mantle conditions by Ghosh, Dipta B., Karki, Bijaya B.

“…The low/ultralow-velocity zones in the Earth’s mantle can be explained by the presence of partial melting, critically depending on density contrast between the…”
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Nitrogen Content in the Earth's Outer Core by Bajgain, Suraj K., Mookherjee, Mainak, Dasgupta, Rajdeep, Ghosh, Dipta B., Karki, Bijaya B.

“…Using first principles molecular dynamic simulations, we explore the effects of nitrogen (N) on the density and sound velocity of liquid iron and evaluate its…”
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Carbon-bearing silicate melt at deep mantle conditions by Ghosh, Dipta B., Bajgain, Suraj K., Mookherjee, Mainak, Karki, Bijaya B.

“…Knowledge about the incorporation and role of carbon in silicate magmas is crucial for our understanding of the deep mantle processes. CO 2 bearing silicate…”
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Transport properties of carbonated silicate melt at high pressure by Ghosh, Dipta B, Karki, Bijaya B

“…Carbon dioxide, generally considered as the second most abundant volatile component in silicate magmas, is expected to significantly influence various melt…”
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Structure and density of basaltic melts at mantle conditions from first-principles simulations by Bajgain, Suraj, Ghosh, Dipta B., Karki, Bijaya B.

“…The origin and stability of deep-mantle melts, and the magmatic processes at different times of Earth’s history are controlled by the physical properties of…”
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Utilization of Artificial Neural Network to explore the compositional space of hollandite-structured materials for radionuclide Cs incorporation by Ghosh, Dipta B., Karki, Bijaya B., Wang, Jianwei

“…Hollandite with the general formula A2B8O16 is known for its potential to immobilize radionuclide Cs in the tunnel along the z-axis of the crystal structure…”
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Crystal–melt interfaces in Mg2SiO4 at high pressure: structural and energetics insights from first-principles simulations by Karki, Bijaya B., Ghosh, Dipta B., Wang, Jianwei, Karato, Shun-ichiro

“…The interplay between crystal–melt and grain boundary interfaces in partially melted polycrystalline aggregates controls many physical properties of mantle…”
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First-principles molecular dynamics simulations of anorthite (CaAl2Si2O8) glass at high pressure by Ghosh, Dipta B., Karki, Bijaya B.

“…We report first-principles molecular dynamics study of the equation of state, structural, and elastic properties of CaAl 2 Si 2 O 8 glass at 300 K as a…”
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Diffusion and viscosity of Mg₂SiO₄ liquid at high pressure from first-principles simulations by Ghosh, Dipta B, Karki, Bijaya B

“…We investigate two key transport properties, self-diffusion and viscosity, of Mg₂SiO₄ liquid as a function of temperature and pressure using density functional…”
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Thermodynamics, structure, and transport properties of the MgO–Al2O3 liquid system by Karki, Bijaya B., Maharjan, Charitra, Ghosh, Dipta B.

“…Seven liquids along the MgO–Al 2 O 3 join were simulated at zero pressure in temperature ( T ) range 2000–6000 K using the first-principles molecular dynamics…”
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First-principles simulations of CaO and CaSiO3 liquids: structure, thermodynamics and diffusion by Bajgain, Suraj K., Ghosh, Dipta B., Karki, Bijaya B.

“…We have performed first-principles molecular dynamics simulations of CaO and CaSiO 3 liquids over broad ranges of pressure (0–150 GPa) and temperature…”
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First principles simulations of the stability and structure of grain boundaries in Mg2SiO4 forsterite by Ghosh, Dipta B., Karki, Bijaya B.

“…Our understanding of how grain boundaries (GBs) can dramatically influence key mineral properties such as creep and diffusion depends on knowledge of their…”
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First‐Principles Study of FeO2Hx Solid and Melt System at High Pressures: Implications for Ultralow‐Velocity Zones by Deng, Jie, Karki, Bijaya B., Ghosh, Dipta B., Lee, Kanani K. M.

“…Pyrite‐type FeO2Hx (P phase) has recently been suggested as a possible alternative to explain ultralow‐velocity zones due to its low seismic velocity and high…”
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Effects of valence and spin of Fe in MgSiO3 melts: Structural insights from first-principles molecular dynamics simulations by Ghosh, Dipta B., Karki, Bijaya B.

“…Iron (Fe) is present in terrestrial melts and at all depths inside the Earth. How Fe in its varying oxidation and spin states influences the properties of…”
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