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Full-Text Articles in Physics

Measurement Of Neutrino-Induced Neutron Production In Lead, Brandon J. Becker May 2022

Measurement Of Neutrino-Induced Neutron Production In Lead, Brandon J. Becker

Doctoral Dissertations

The COHERENT Collaboration is an experimental effort to make the first measurement of coherent elastic neutrino-nucleus scattering (CEšœˆNS). The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory provides an intense, timed source of neutrinos from the decay of pions and muons produced during the spallation of mercury by 1 GeV protons generated in a particle accelerator. COHERENT seeks to make an unambiguous measurement by using a variety of low-threshold detectors capable of measuring the low-energy nuclear recoils resulting from CEšœˆNS interactions. This already challenging task is further complicated with the presence of backgrounds. Consequently, we must seek to reduce ā€¦


Measurements Of Fast Alpha Decays In The 100sn Region, Ian Connor Cox May 2020

Measurements Of Fast Alpha Decays In The 100sn Region, Ian Connor Cox

Chancellorā€™s Honors Program Projects

No abstract provided.


Beta-Delayed Neutron Data And Models For Scale, Kemper Dyar Talley Dec 2016

Beta-Delayed Neutron Data And Models For Scale, Kemper Dyar Talley

Doctoral Dissertations

Recent advancements in experimental and theoretical nuclear physics have yielded new data and models that more accurately describe the decay of fission products compared to historical data currently used for many applications. This work examines the effect of the adopting the Effective Density Model theory for beta-delayed neutron emission probability on calculations of delayed-neutron production and fission product nuclide concentrations after fission bursts as well as the total delayed neutron fraction in comparison with the Keepin 6-group model. We use ORIGEN within the SCALE code package for these calculations. We show quantitative changes to the isotopic concentrations for fallout nuclides ā€¦


A Study Of The Structure Of Light Tin Isotopes Via Single-Neutron Knockout Reactions, Andrew Franklin Ayres Aug 2014

A Study Of The Structure Of Light Tin Isotopes Via Single-Neutron Knockout Reactions, Andrew Franklin Ayres

Doctoral Dissertations

The region around 100 Sn [100Sn] is important because of the close proximity to the N=Z=50 magic numbers, the rp process, and the proton drip-line. Alpha decay measurements show a reversal in the spin-parity assignments of the ground and first excited states in 101 Sn [101Sn] compared to 105 Te [105Te]. However, the lightest odd- mass tin isotope with a firm spin-parity assignment is 109 Sn [109Sn]. The d 5/2 [d5/2] and g 7/2 [g7/2] single-particle states above N=50 are near degenerate, evidenced by the excitation energy of the first excited state in 101 Sn at only 172 keV. The ā€¦


Finding Nuclear Drip Lines And Studying Two Proton Emission, Alexander Matthew Perhac May 2013

Finding Nuclear Drip Lines And Studying Two Proton Emission, Alexander Matthew Perhac

Chancellorā€™s Honors Program Projects

No abstract provided.