Quantum tunnel effect and alpha-decay of nuclei Zhongzhou REN Department of Physics, Nanjing University, Nanjing, China Center of Theoretical Nuclear Physics National Laboratory of Heavy -lon Accelerator, Lanzhou, china
1 Quantum tunnel effect and alpha-decay of nuclei Zhongzhou REN • Department of Physics, Nanjing University, Nanjing, China • Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou, China
Outline Introduction Microscopic calculations on superheavy nuclei Spherical generalized density-dependent cluster model Deformed generalized density-dependent cluster model Summary
2 Outline • Introduction • Microscopic calculations on superheavy nuclei • Spherical generalized density-dependent cluster model • Deformed generalized density-dependent cluster model • Summary
Alpha of nuclear physics: 1896-1930 Discovery of radioactivity: Becquere Identify Po and Ra by Curies.1903年。 Alpha, Beta, gamma rays: Rutherford Existence of nucleus by alpha scattering The size of nucleus by alpha scattering Quantum mechanics for alpha decay Gamow,前苏联一丹麦-美国
3 Alpha of nuclear physics: 1896-1930 • Discovery of radioactivity: Becquere. • Identify Po and Ra by Curies. 1903…年。 • Alpha, Beta, gamma rays: Rutherford. • Existence of nucleus by alpha scattering • The size of nucleus by alpha scattering • Quantum mechanics for alpha decay: Gamow, 前苏联—丹麦---美国
Introduction Proton radioactivity(2251) The study on a decay dates back to the early Alpha decay(2252 days of nuclear physics. It although one of the oldest Cluster radioactivity (2287) objects of study in nuclear Spontaneous fission(Z 290) p hysics, remains an attractive decay mode 238 90
4 Introduction Proton radioactivity (Z≥51) Alpha decay (Z≥52) Cluster radioactivity (Z≥87) Spontaneous fission (Z ≥90) The study on α decay dates back to the early days of nuclear physics. It, although one of the oldest objects of study in nuclear physics, remains an attractive decay mode
There are more than 400 nuclei in the periodic table that exhibit the alpha-decay phenomenon ■ 102030405060708090100110120130140150160170 NE∪ TRONS 100 R DECAY MODES T □βEC+et) β Internal Transition S □ Spontaneous Fission Stable nuclide □ Unknown decay
5 There are more than 400 nuclei in the periodic table that exhibit the alpha-decay phenomenon