Edward Teller and Nuclei: along the Trail to the Neutrino
نویسنده
چکیده
I discuss two of Edward Teller's contributions to nuclear physics, the introduction of the Gamow-Teller operator in β decay and the formulation of the Goldhaber-Teller model for electric dipole transitions, in the context of efforts to understand the weak interaction and the nature of the neutrino.
منابع مشابه
A Computational Study to Find the Vibrational Modes Connected with Specific Molecular Structures of Calculated Compound
The purpose of this research is to provide a deeper understanding of the planar high- symmetry configuration instability. In the ideal case, the distortion corresponds to the movements of nuclei along normal modes that belong to non-totally symmetric irreps of the high symmertry (HS) point group of molecule. The analysis of the structural distortion from the HS nuclear arrangements of the JT ac...
متن کاملNeutrino absorption cross sections in supernova environment
We study charged-current neutrino cross sections on neutronrich nuclei in the mass A ∼ 60 region. Special attention is paid to environmental effects, i.e. finite temperature and density, on the cross sections. As these effects are largest for small neutrino energies, it is sufficient to study only the Gamow-Teller (GT) contributions to the cross sections. The relevant GT strength distributions ...
متن کاملX iv : n uc l - th / 9 80 50 07 v 1 4 M ay 1 99 8 Neutrino capture by r - process waiting - point nuclei
We use the Quasiparticle Random Phase Approximation to include the effects of low-lying Gamow-Teller and first forbidden strength in neutrino capture by very neutron-rich nuclei with N = 50, 82, or 126. For electron neutrinos in what is currently considered the most likely r-process site the capture cross sections are two or more times previous estimates. We briefly discuss the reliability of o...
متن کاملNeutral-current neutrino reactions in the supernova environment
We study the neutral-current neutrino scattering for four nuclei in the iron region. We evaluate the cross sections for the relevant temperatures during the supernova core collapse and derive Gamow-Teller distributions from large-scale shell-model calculations. We show that the thermal population of the excited states significantly enhances the cross sections at low neutrino energies. Calculati...
متن کاملWeak-interaction processes during stellar collapse
Massive stars end their lifes as type II supernovae, triggered by a collapse of their central iron core with a mass of more than 1M . The general picture of a core-collapse supernova is probably well understood and has been confirmed by various observations from supernova 1987A. Nevertheless, the most sophisticated supernova simulations [1, 2, 3] currently fail to explode indicating that improv...
متن کامل