A5014777601- Astronomical and nuclear sciences
- Nuclear physics research studies
- Scientific Research and Discoveries
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- Quantum Chromodynamics and Particle Interactions
Michigan State University
2018-2020
National Superconducting Cyclotron Laboratory
2020
The mass, or binding energy, is the basis property of atomic nucleus. It determines its stability, and reaction decay rates. Quantifying nuclear important for understanding origin elements in universe. astrophysical processes responsible nucleosynthesis stars often take place far from valley where experimental masses are not known. In such cases, missing information must be provided by theoretical predictions using extreme extrapolations. Bayesian machine learning techniques can applied to...
The region of heavy calcium isotopes forms the frontier experimental and theoretical nuclear structure research where basic concepts physics are put to stringent test. recent discovery extremely neutron-rich nuclei around $^{60}\mathrm{Ca}$ O. B. Tarasov et al. [Phys. Rev. Lett. 121, 022501 (2018)] determination masses for $^{55--57}\mathrm{Ca}$ S. Michimasa 022506 provide unique information about binding energy surface in this region. To assess impact these discoveries on landscape's...
The chart of the nuclides is limited by particle drip lines beyond which nuclear stability to proton or neutron emission lost. Predicting range particle-bound isotopes poses an appreciable challenge for theory as it involves extreme extrapolations masses regions where experimental information available. Still, quantified are crucial a variety applications, including modeling stellar nucleosynthesis. We use microscopic mass models and Bayesian methodology provide predictions separation...
The phenomenon of reflection-asymmetric nuclear shapes is relevant to stability, spectroscopy, decays and fission, the search for new physics beyond standard model. Global surveys ground-state octupole deformation, performed with a limited number models, suggest that pear-shaped isotopes fairly across landscape. We carry out global analysis deformations particle-bound even-even nuclei $Z \leq 110$ $N 210$ using density functional theory (DFT) several non-relativistic covariant energy...
The limits of the nuclear landscape are determined by binding energies. Beyond proton drip lines, where separation energy becomes negative, there is not enough to prevent protons from escaping nucleus. Predicting properties unstable states in vast territory emitters poses an appreciable challenge for theory as it often involves far extrapolations. In addition, significant discrepancies between models proton-rich call quantified predictions. With help Bayesian methodology, we mix a family...