PPT-Beta Decay – General Principles

Paul Mantica Lecture 1 Euroschool for Exotic Beams Leuven Belgium 2009 Beta Decay of Exotic Nuclei Science Opportunities GamowTeller strength in NZ nuclei to 100 Sn Persistence of shell gaps in extreme neutronrich nuclei . Pierre Curie was already a famous scientist before he married Marie Sklodowska in 1895.  This famous couple did not only find true love, they also discovered radium and polonium.  For their groundbreaking research in radioactivity, the couple were awarded the 1903 Nobel Prize in physics.  It was Marie Curie who coined the term "radioactivity", and in her honor, the 1910 Radiology Congress chose the curie as the basic unit of radioactivity.  Pierre died from being run over by a horse drawn wagon, but Marie continued their research, and was eventually awarded a second Nobel Prize, the 1911 prize for Chemistry.  She died in 1934, suffering from pernicious anemia which had undoubtedly been the result of years of radiation exposure.. 96. Zr and Double-Electron Capture of . 156. Dy to Excited Final States. Sean Finch. Thesis Defense. March 25, 2015. Outline. Introduction to second-order weak decays. Nature of the neutrino. Double-. DEFINE. the term decay heat.. Given the operating conditions of a reactor core and the necessary formulas, . CALCULATE . the core decay heat generation.. DESCRIBE. two categories of methods for removing decay heat from a reactor core.. . Beta decay. seen at quark level. . . A quark emits a W or W- and changes its flavor (type).. . Beta decay. leading a positron. It travels a short distance before encountering an electron in the material, where it annihilates to two gamma rays (photons) of .511 MeV each.. Karsten. . Riisager. Aarhus University. The main points. Occurs frequently in light nuclei. No single, simple way to . analyse. the decays. Consequences:. not unique Gamow-Teller strength (B. GT. ) ?. What does it mean to . fuse . something together?. When hear word . fission . – what does it mean?. Formation of Elements. I. How Elements Form. A. . Nuclear Fusion . – when two atomic nuclei combine. Quiz. Nuclear Physics Topics. Nuclear/Radioactive Decay. Nuclear Spin. Fission and Fusion. 1. What is this ?. Ans. : Magnet levitating above a high-. Tc. . superconductor. . This is the “. Meissner. beta decay. . They are designated by beta (β). There are two forms of beta decay, . β. −.  and . β. +. , which respectively give rise to the electron and the positron.. . The generalized atomic equation for beta decay is as follows. Rate of Radioactive decay with units. Geiger-Muller Counter. An atom is composed of positively charged nucleus that is surrounded by. negatively charged electrons.. The number of electrons is equal to the number of protons = Atomic Number. : . universal term for all weak-interaction transitions. . between two neighboring isobars. three different forms. β. -. , . β. +. & . EC. (. capture of an atomic electron. Rate of Radioactive decay with units. Geiger-Muller Counter. An atom is composed of positively charged nucleus that is surrounded by. negatively charged electrons.. The number of electrons is equal to the number of protons = Atomic Number. Alpha Decay . Alpha decay. occurs for those nuclides which have an atomic number greater than 82. Such heavy nuclides have no stable configuration of neutrons and protons, and as a result, emit an alpha particle consisting of 2 protons and 2 neutrons.. FNAL PAC 20 June 2016. Caveats. I am not an expert in NLDBD. If I say something wrong or out of date, please speak up.. As chair of the Nuclear Science Advisory Committee, I served on the last two NSAC Subcommittees on NLDBD and chaired the Long Range Plan. These reports are good summaries of the field and the issues. . tiny. . electrons. . fool. the . big. . atomic. . nuclei. in the skies. Stellar Nucleosynthesis and . Cosmochronology. Marcel ARNOULD. Institut d’Astronomie et d’Astrophysique, ULB. and . its.