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Filtering by: Creator Myrold, David D. Remove constraint Creator: Myrold, David D. Advisor Hamby, David M. Remove constraint Advisor: Hamby, David M. Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.)

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  • Investigation into the effects of subsurface ice deposits on the shielding of fast spectrum nuclear reactors using Martian regolith

    Creator:
    Frey, Wesley D.
    Abstract:
    As human exploration of space continues, eventually sights will be set on establishing a permanent manned habitat on the surface of Mars. The success of such a base will depend on many new and developing technologies. Low mass and high energy density power production units will be of paramount importance....
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Wesley D. Frey for the degree of

  • A comparison of measured and simulated exposure rates near tungsten-based medical transport pigs

    Creator:
    Newman, Errol D. I.
    Abstract:
    A lack of data concerning tungsten-based medical shields, specifically unit dose transport pigs, may lead to unnecessary exposure to medical personnel. Available research comparing lead to sintered tungsten shows that tungsten is approximately 1.5 - 10.0 times more effective as a radiation shield. However, this research lacks high-energy vs. low-energy...
    Resource Type:
    Masters Thesis
    Full Text:
    David M. Hamby A lack of data concerning tungsten-based medical shields, specifically unit dose

  • Retrospective thermal neutron fluence determination using lithium-ion mobile telephone batteries

    Creator:
    Dorrell, Nick J.
    Abstract:
    Fortuitous dosimeters are radiosensitive objects carried by an individual who was exposed to radiation. These objects can be analyzed some time after exposure and the results can be used to aid in calculating radiation fields and doses received by individuals. Items that make good fortuitous dosimeters are those that are...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: David M. Hamby Fortuitous dosimeters are radiosensitive objects carried by an

  • Use of CR-39 for nuclear criticality accident dosimetry and high neutron dose monitoring

    Creator:
    Tai, Lydia I.
    Abstract:
    CR-39 foils were irradiated as part of nuclear accident dosimetry experiments using the Godiva reactor at the Nevada National Security Site and the Caliban and Prospero reactors at the Valduc Centre for Nuclear Studies in France. The irradiated foils were chemically etched using the standard Lawrence Livermore National Laboratory process...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: ____________________________________________________ David M. Hamby CR-39

  • Design and analysis of radiation shielding eyewear

    Creator:
    Spackman, David A.
    Abstract:
    The recent reductions to the international dose limit recommendations for the lens of the eye have renewed interest in radiation protection strategies in interventional fluoroscopy, where eye-lens radiation exposure occurs frequently. Radiationshielding eyewear can significantly reduce lens dose in these scenarios, but accurate protection factors are elusive because they depend...
    Resource Type:
    Masters Thesis
    Full Text:
    Microsoft Word - David Spackman M.S. Thesis -Final

  • The design, use and implementation of digital radiation detection and measurement equipment for the purpose of distance instruction

    Creator:
    Vasquez, David C.
    Abstract:
    Digital Instrumentation and Detection is becoming the future of radiation detection and measurement. Computers are able to perform digitally what before would have taken an extensive array of analog equipment. The art of teaching radiation detection and measurement is following this same pattern of a shift from purely analog to...
    Resource Type:
    Masters Thesis
    Full Text:
    ABSTRACT ON THE THESIS OF David C. Vasquez for the degree of Master of Science in Radiation Health

  • Development of a Fundamental Depth-Dependent Neutron Dosimetry Model

    Creator:
    Anspach, Logan J.
    Abstract:
    Current neutron dosimetry methods rely on the assumption that charged particle equilibrium (CPE) is established within the tissue medium. This maintains that the kinetic energy transferred to the medium (KERMA) is equivalent to absorbed dose. However, this assumption is only valid for large volumes such as the whole body. For...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: ______________________________________________________ David M. Hamby Abstract

  • Human Eye Dosimetry: Air Gap Analysis by Shield Placement and Photon Energy

    Creator:
    Herrera, Joshua P.
    Abstract:
    When the ICRP updated their recommended limits for eye dose, they ignited a renewed interest in eye dosimetry. Especially, how the updated eye dose estimates affect current regulations and what that would mean to a radiation worker. Radiation workers are commonly required to wear leaded eyeglasses to reduce their dose...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________________________ David M. Hamby Abstract: When the ICRP updated their recommended limits for eye dose, they

  • Design, construction, and analysis of a skin contamination dosimeter

    Creator:
    Cazalas, Edward J.
    Abstract:
    International recommendations provided by the International Commission on Radiation Protection (ICRP), as well as national regulations, set by the U.S. Nuclear Regulatory Commission (NRC), state that the exposure of skin to highly concentrated radioactive sources should be monitored at specified depths in skin and kept below specific dose equivalence levels....
    Resource Type:
    Masters Thesis
    Full Text:
    #HIIJ3# # &?95;K#L;6?<@G#(8@691A>9?8@G#0@.#!@05M6?6#87#0#%N?@#(8@90D?@09?8@#L86?D;9;1# # !E6910>9

  • Low-Dose Ionizing Radiation Solid Cancer Risk in Adults : Radiation Hormesis Study Design

    Creator:
    Alhussan, Abdulaziz S.
    Abstract:
    Cancer risk at low-dose ionizing radiation has been the subject of great scientific controversy in the past century. The clear majority of national and international radiation protection regulators adopt the linear no-threshold (LNT) model based on the atomic-bomb survivors Life Span Study (LSS) for solid cancer risk assessment. The LNT...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ David M. Hamby Cancer risk at low-dose ionizing radiation has been the