Spring 2017 CHEM 312: Lecture 4 Alpha Decay

This lecture discusses alpha decay in radionuclides. Theories on alpha decay are presented. Systematics and energetics involved in alpha decay are presented. The correlation between Q value and decay energy is described. The Geiger Nuttall relationship is provided, described, and utilized in a model for alpha decay. Tunneling is also exploited to described alpha decay, coupling energy and half-life. Gamow calculations are shown to reflect the Geiger Nuttall relationship. Hindered alpha decay is discussed. Hindered alpha decay is employed to described nuclear properties. Hinderance factors are described, along with how they are calculated and where they can be found. Proton and other charged particle emission are presented. The lecture time is 46 minutes.   The lecture is assigned 2-Feb-17 and PDF Quiz 4 due 7-Feb-17.

Spring 2017 CHEM 312: Lecture 3 Decay Kinetics

This lecture covers the fundamental equations that describe the decay of radionuclides. Basic equations and their utility are presented. Equations for mixtures, equilibrium, and branching of radionuclides are covered. Examples are provided for error evaluation from counts, activity determination, evaluation of half life, and lifetime of isotopes. Discussion of natural radiation and dating are given. Examples are provided for dating from 238U, 14C, and the Oklo reactor. The lecture time for part 1 is 43 minutes. Part 2 is 60 minutes.  The lecture is assigned 26-Jan-17.  The PDF Quiz 3 is due 5-Feb-17.

Spring 2017 CHEM 312: Lecture 2 Nuclear Properties

A discussion on systematics of nuclear properties are presented.  Mass, mass excess, and mass distribution within the nucleus is presented.   Mass excess data are used to calculate energies in decays.  Equations for determining nuclear radii are provided.  Models that are used to describe the stability of nuclei are introduced.  Nuclear shapes and structures are introduced. The lecture time is 47 minutes. The supplemental lecture on the Q value calculator is around 3 minutes.  The lectures are available in Powerpoint audio and MP4 format from the CHEM 312 youtube channel.  The lecture is assigned: 19-Jan-17 and PDF Quiz 2 is due 29-Jan-17.

Spring 2017 CHEM 312: Lecture 1 Introduction and Chart of the Nuclides

The class outcomes, expectations, and grading are explained.  A history of radioelement discovery and radiation research is presented. The Chart of the Nuclides and Table of the Isotopes are discussed and used.  Atomic properties, nuclear nomenclature, X-rays, types of decays and physical forces are introduced. Part one viewing time 38 minutes, part 2 viewing time 42 minutes.  The PDF quiz 1 is assigned 17-Jan-17 and due 24-Jan-17.

Spring 2017 CHEM 312: Lecture 0 Viewing online lectures

Using the online lecture format is presented. The lectures are available as notes without audio or animation, PowerPoint audio and animation, and MP4. The use of multiple formats should permit viewing of lectures on a host of platforms.