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Showing 1 to 20 of 148 for “"radiation damage"”.
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Radiation Damage in Permanent Magnet Lenses
… magnet quadrupoles in their magnetic optics. Radiation exposure during radiography experiments is known to damage these lenses and degrade image quality. This effect is studied under controlled conditions, leading to the conclusion that nonuniform radiation damage is inherent to the quadrupole …
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Radiation damage in copper indium diselenide
A study of radiation damage in copper indium diselenide (CIS) is presented. Thebuild up of extended defects and the conditions for amorphisation have beenexplored. In particular, dislocation loops have been characterised and theinfluence of composition and temperature on amorphisation has been …
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Radiation damage in nickel(3) aluminum
… both fundamental and practical aspects of radiation damage. The first is a Transmission Electron Microscopy investigation of cascade damage under heavy ion irradiation; the second is a radiation induced segregation study. For the first topic, the cascade generated damage structure (namely, …
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Radiation damage in rock-forming minerals.
Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
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Radiation damage effects in charge coupled devices
The effects of Sr90 beta radiation and Co60 gamma radiation on the operation of EEV buried channel charge coupled devices (CCDs) have been studied. This work was instigated by the need to qualify CCDs for the SLD vertex detector. However, the work is also relevant to other small signal, low noise …
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Radiation damage assessment of atomically thin membranes
… irradiated with varying levels of Gallium ion radiation in a focused ion beam machine. It is found that irradiating the sample with ion beam settings of 8 keV acceleration voltage and a dosage of 2.53E+13 Gallium ions cm 2 causes no noticeable change in membrane performance of water vapor …
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Electronic effects in radiation damage simulations in metals
Radiation damage has traditionally been modelled using classical molecular dynamics, in which the role of the electrons is con�fined to describing bonding via the interatomic potential. This is generally sufficient for low radiation energies. However high energy atoms lose a signi�ficant proportion …
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Radiation Damage in CMOS Image Sensors for Space Applications
The space radiation environment is damaging to silicon devices, such as Complementary Metal Oxide Semiconductor (CMOS) image sensors, affecting their performance over time or causing total failure. The first part of this work investigates a Charge Coupled Device (CCD) style CMOS image sensor …
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Atomistic simulations of radiation damage in amorphous metal alloys
… studies have characterized the atomic-level radiation response mechanisms in irradiated crystalline alloys, comparatively little is known regarding the mechanisms of radiation damage in amorphous alloys. Knowledge of collision cascade dynamics is lacking, both with respect to the possibility …
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Ultrasonic studies of radiation damage in an aluminum-manganese alloy
… of defects produced by a low dose of electron radiation. In spite of the optimum conditions for avoiding complications due to multiple interstitial and multiple solute atom complexes, the multiple peak structure of the data indicated that more than one defect configuration was present. This is …
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Optimizing a 3D brain microvascular model to study radiation damage
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
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Radiation damage quantification in elemental copper using Wigner energy storage
Radiation damage in materials can cause critical components in fission and fusion reactors to fail with potentially catastrophic consequences. Radiation damage quantification is essential for understanding, predicting, and preventing such failures. The current unit of radiation damage, …
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Study of Radiation Damage in Silicon Strip Detector for ATLAS ITk
Ionizační záření způsobuje objemové a povrchové poškození v křemíkových detektorech. Objemové poškození je také způsobováno neutrony. Tyto poškození ovlivňují detekční vlastnosti křemíkových stripových detektorů. Hlavním cílem této bakalářské práce je studovat, jaký vliv má radiační poškození na …
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Characterization and mitigation of radiation damage on the Gaia Astrometric Field
… on the focal plane, which can be disrupted by radiation-induced Charge Transfer Inefficiency (CTI). Gaia will suffer radiation damage, impacting on the science performance, which has led to a series of Radiation Campaigns (RCs) being carried out by industry to investigate these issues. The goal …
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Radiation Damage Analysis of the Swept Charge Device for the C1XS Instrument
… orbital debris, and the thermal and radiation environment. The focus of this thesis is concerned with ensuring high energy resolution from the swept charge devices (SCDs), essentially a non-pixellated version of the charge coupled device (CCD), for use in the Chandrayaan-1 X-ray …
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Cathodoluminescence of radiation damage, non-stoichiometric and impurity defects in cadmium telluride
… (1.5906ev) has been shown clearly by selective radiation damage to be due to exciton annihilation at neutral cadmium vacancy acceptors. The ionization energies of these exciton emission centres have been related to the ionization energies of the edge emission centres. An edge emission at 797.6nm …
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Effect of Hyperthermia on Radiation Damage and Its Repair in Tribolium Confusum
Made available in DSpace on 2014-12-14T05:40:42Z (GMT). No. of bitstreams: 1 7714975.pdf: 2022644 bytes, checksum: f76c7dcd858cf3fbee17fa19a5e41416 (MD5) Previous issue date: 1977
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