Nuclear β-decay half-lives are basic nuclear physics inputs for rapid neutron-capture process (r-process) simulation. Since r-process path is far from the stability line, the accurate description of β-decay half-lives is important for r-process study. In this talk, I will introduce the improvement of β-decay half-life description by including the deformation degree of freedom and beyond...
The origin of heavy elements in the universe is an important problem in basic science. The r-process is responsible for about half of the elements heavier than iron. Accurate theoretical predictions of nuclear masses and β-decay half-lives are crucial for understanding the r-process. This talk reports on recent progress in the development of various theoretical models and machine learning...
Effective lifetime of a nuclide is the key parameter that can quantitatively estimate the degree of passing this nuclide in rp-process.
The mass of neutron-deficient isotope $^{70}$Kr, which has been directly measured by using $B\rho$-defined isochronous mass spectrometry, allows us to re-evaluate the effective stellar half-life of the potential waiting point $^{68}$Se in rp-process under...
Polyethylene-moderated 3He neutron detectors are widely used in the neutron flux monitor, fission neutron multiplicity measurement, (alpha, n), (gamma, n), and (n, xn) reaction cross-section measurements. However, this kind of detector faces a problem that their detection efficiency strongly depends on neutron emission angle and neutron energy when neutron energy rises above 1 MeV. Therefore,...
