Tag

Theoretical Calculations

All articles tagged with #theoretical calculations

science1 year ago

"The Sun's Fusion Process Unveiled Through Novel Theory-Based Evaluation"

A new evaluation protocol based on theoretical calculations and experimental data has significantly reduced uncertainty in determining the rate of fusion of protons with beryllium-7 at low energy, a critical process in the sun's nuclear fusion reactions. This improvement will lead to more accurate predictions based on the standard solar model, enhancing our understanding of neutrino properties and the sun's interior. The protocol is expected to set a new standard for evaluating light-ion astrophysical reactions in regions where experimental measurements are not feasible.

science2 years ago

Unveiling the Secrets of Earth's Iron Cycle: From Deep Synthesis to Oceanic Dynamics

Scientists have successfully recreated the high-pressure iron polymorph believed to make up a significant portion of the Earth's core. By analyzing the elastic properties of this material, they have gained insights into why seismic waves travel faster pole-to-pole than across the equator. The experimental measurements were supported by theoretical calculations that accounted for the unique interactions between iron electrons. This research opens up possibilities for further exploration of metal systems under extreme conditions.

physics2 years ago

New Experiment Challenges Nucleus Theory

An experiment conducted by Simon Kegel and his colleagues has cast doubt on the leading theory of the nucleus. The experiment involved exciting helium nuclei by shooting a beam of electrons at a tank of cold helium gas. The team then compared the change in the nucleus's spread with a variety of theoretical calculations, but none of the theories matched the data. The calculation that came closest used an oversimplified model of the nuclear force, not the chiral effective field theory. Several groups plan to repeat the calculations to find out what went wrong.

science2 years ago

Unraveling Mysteries of Nuclear Matter and Forces.

Scientists have resolved a long-standing issue with a theoretical calculation method known as "axial gauge," which had mistakenly suggested two properties of quark-gluon plasma were identical. The study also made a prediction on gluon distribution measurement, set to be tested in future experiments with the Electron-Ion Collider. The ultimate goal is to understand how complex forms of matter emerge from elementary particles affected by strong forces.