Suchergebnisse
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1. Mai 2024 · Density functional theory. Density functional theory ( DFT) is a computational quantum mechanical modelling method used in physics, chemistry and materials science to investigate the electronic structure (or nuclear structure) (principally the ground state) of many-body systems, in particular atoms, molecules, and the condensed phases.
29. Apr. 2024 · The Semi-Empirical Mass Formula (SEMF) is also known as the Weizsäcker Formula. It serves as a critical theoretical model in nuclear physics for approximating the binding energy of atomic nuclei. Developed by Carl Friedrich von Weizsäcker in 1935.
Vor 2 Tagen · As a function of temperature in kelvins, the viscosity can be estimated using the semi-empirical Vogel-Fulcher-Tammann equation: = where A = 0.02939 mPa·s, B = 507.88 K, and C = 149.3 K. Experimentally determined values of the viscosity are also given in the table below. The values at 20 °C are a useful reference: there, the dynamic ...
Vor 2 Tagen · Also shown are: semi-major axis a, semi-minor axis b and semi-latus rectum p; center of ellipse and its two foci marked by large dots. For θ = 0° , r = r min and for θ = 180° , r = r max . Mathematically, an ellipse can be represented by the formula:
Vor 5 Tagen · In this work, the experimental EXFOR data collected across the neutron-induced energy between 14 and15 MeV were used to produce empirical formulas to calculate the (n, $$\\alpha$$ α ) reaction cross-section. By including the asymmetry parameter, mass number and average binding energy into the main empirical formula, we achieved empirical systematics for 119 nuclei that were categorized into ...
17. Apr. 2024 · We use these crystals to calculate coefficients in the Bethe--Weizsäcker semi-empirical mass formula and the compression modulus of infinite nuclear matter, and find a significant improvement as compared with other variants of the Skyrme model.
