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Studying Properties Of Xenon Doped Argon And Developing Optical Simulation Techniques For The Legend Collaboration, A Neutrinoless Double Beta Decay Experiment, Neil Christopher Mcfadden Dr

Physics & Astronomy ETDs

Neutrinoless double beta decay is a hypothesized lepton-number-violating process in which two neutrons decay to two protons, producing two electrons but no electron antineutrinos. The LEGEND collaboration will search for this decay in ⁷⁶Ge. To improve the argon active veto for LEGEND-1000, xenon doped argon was explored as an alternative active volume. Simulations using argon doped with 10 ppm xenon and pure liquid argon were used to predict the light yield from cosmic muons in a 100 liter cryogenic vessel. The simulations predicted that xenon doping would yield 1.83+/-0.02 more light, while an increase of 1.81+/-0.05 was measured. From …

An Investigation In The Treatment Of Anisometropia With Orthokeratology Lenses, Cara Finn

Student Theses, Dissertations and Capstones

Purpose: The purpose of this study is to evaluate the treatment and management of anisometropia with orthokeratology lenses compared to traditional spectacle lenses. The present study aimed to quantify the interocular difference in relative corneal refractive power shift and examine its association with the differential axial growth.

Methods: One hundred and two subjects between the ages 8 and 14 years old with over -0.50D of myopia and at least 1D of anisometropia were treated with either orthokeratology lenses or traditional single vision spectacle lenses. Baseline data of axial length, refraction, and corneal topography were taken at the initial visit and …