Department of Physics and Astronomy

University of Mississippi

Events

  • Tue
    23
    Jan
    2018
    4:00 pmLewis 101

    Jake Bennett
    Department of Physics
    Carnegie Mellon University

    Amplitude Analysis: A Powerful Tool for Hadron Spectroscopy

    Extracting useful information from experimental data is often far from straightforward. This is particularly true for studies in hadron spectroscopy that seek to determine the properties of constituent quark states. The presence of multiple, often broad, states leads to potentially intricate interference patterns that make the extraction of meaningful information challenging. Amplitude analysis is a powerful tool to disentangle the effects of interference and extract useful properties of hadronic states. This information is vital for a deeper understanding of the fundamental laws of nature. In this talk, I will review the experimental challenges that are associated with amplitude analysis, as well as its potential as a tool for hadron spectroscopy at Belle II.

  • Tue
    30
    Jan
    2018
    4:00 pmLewis 101

    Brian Anderson
    Department of Physics and Astronomy
    Brigham Young University

    Listening For Cracks Using Resonance And Time Reversal Techniques To Prevent Radiation Leakage From Nuclear Storage Containers

    Spent nuclear fuel is often stored in stainless steel canisters in the United States. Stainless steel is susceptible to Stress Corrosion Cracking (SCC). This presentation will discuss progress on the use of the Time Reversed Elastic Nonlinearity Diagnostic (TREND) and Nonlinear Resonant Ultrasound Spectroscopy (NRUS) to determine whether SCC is present and attempt to quantify the depth of the cracking. NRUS is the measurement of the amplitude dependence of a sample's resonance frequency, which occurs because of a softening of the elastic modulus in damaged media. NRUS provides a global indication of damage in a sample. TREND employs time reversal acoustics, which focuses wave energy at various points of interest to excite localized high amplitude. The amplitude dependence of this localized energy allows pointwise inspection of a sample.