Structure and Dynamics of the CMB Region - Introduction Part II | Widener University - Edubirdie

University:
Widener University
Course:
CHEM-255 | Organic Chemistry I
Academic year:

2023
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294

Pages:

8
Author:

mengkom95z

Pressure and Temperature at CMB High dT/dZ 136 GPa 3000-5000 K Materials at CMB Silicates (solids) Metals (liquids) Strong Mantle Flow near CMB Lay et al. (1998) Nature 392, 461 Differential Stress Æ Mineral Texture High P-T Techniques s LHDAC: Laser Heated Diamond Anvil Cell LVP: Large Volume Press RHDAC: Resistance Heated Diamond Anvil Cell Pressure - Diamond Anvil Cells 1 mm 100 µm Sample Diamond anvils Gasket Sample size 1 mm2 10-2 mm2 Pressure generated by 103 N 1 GPa 100 GPa Shock Wave P = 1 - 800 GPa T > 6000 K Direct measurements for density, pressure, and sound wave velocity. Ambiguous temperature measurements (cf) Laser shock First Principles Calculations • Schrodinger equation • Many body problem – N interacting electrons • Truncation problem – Space, Time • Thermal effect – Static lattice (bonding) E vs Vibrational E MIT Mineral Physics Lab

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Structure and Dynamics of the CMB Region - Introduction Part II

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