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Showing 1 to 11 of 11 for “"Alpha Decay"”.
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Alpha decay of excited states of carbon-12
… been bombarded by monoenergetic fast neutrons. Alpha-particle decays of carbon nuclei have been separated from other events by a specialised application of the pulse shape discrimination technique. A numerical analysis of the data has yielded alpha-particle energy spectra over a wide energy …
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Alpha decay and alpha elastic scattering by heavy nuclei
… Merchant and Perez to successfully describe alpha decay half lives for more than 400 nuclei. An important feature of this model is that it envisages preformed (preformation factor, P=1.0) alpha particles in the parent nuclei to be moving in orbits with a large value of a global quantum …
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The Behavior of Radioactive Elements Produced by Alpha-Decay in Various Gases
Made available in DSpace on 2014-12-09T17:35:10Z (GMT). No. of bitstreams: 1 6503692.pdf: 3168647 bytes, checksum: fc99e811f1657247c4864f0b391b0f61 (MD5) Previous issue date: 1964
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Alpha Spectroscopy in a Superheated Bubble Chamber and the Design of the PICO-500 Hydraulic Control Cart
… acoustic energy discrimination to distinguish alpha and neutron-induced background events. The acoustic data is processed into a quantity called the Acoustic Parameter (AP), which is critical for vetoing background events in dark matter searches. This study used background data from the …
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Radiopurity measurement of acrylic for the DEAP-3600 dark matter experiment
… by an extremely radiopure acrylic vessel. Alpha decays from the inner surface of the acrylic vessel are a source of background. If a fraction of the alpha energy is observed, or if the recoiling nucleus from the alpha decay is observed, the event will not be separated from a dark matter …
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Current profile measurements using MSE on Alcator C-Mod
… patterns from Doppler-shifted Balmer-alpha decay emission from an energetic neutral beam injected into a magnetically confined plasma. This dissertation consists of three parts: (1) the current status of the C-Mod MSE diagnostic which includes major upgrades in the hardware and …
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Medical Isotope Production of Actinium 225 By Linear Accelerator Photon Irradiation of Radium 226
… a number of differing cancers by way of Targeted Alpha Therapy (TAT). This method utilizes the alpha-decay of both Ac-225 (half-life 10 days) and Bi-213 (half-life 46 min) to kill cancerous cells on a localized basis. Maximum energy is delivered to the cancer cells thereby greatly minimizing …
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Analysis of vacuum and argon gas fill data from the MiniCLEAN dark matter experiment
… evacuated and when filled with warm argon gas. Alpha decay events from radon progeny on the wavelength-shifting surface occur in this data at a measured rate of 19.0 ± 0.4 /h/m2 MiniCLEAN's projected sensitivity to spin-independent WIMP-nucleon scattering, derived from simulation of this surface …
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Modeling of Radiation Effects on the Chemical Durability of Nuclear Waste Forms (Leaching, Radioactive Glass Damage)
… are caused mainly by the recoiling nuclei, or (alpha)-recoils, accompanying the emission of (alpha)-particles resulting from the presence of actinides in the waste. Two techniques, actinide doping and ion implantation, have been preferentially used to study the effects of (alpha)-decay aging on …
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Molecular dynamics simulation and topological analysis of the network structure of actinide-bearing materials
… alkali borosilicate glass doped with uranium. Alpha-decay of the uranium changes the structure of the host material, inducing amorphousness, recrystallization, and microcracking, among other structural changes. My work on actinide waste storage shows the utility of topological methods for …
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Experimental and modeling methods to study radon transport processes in porous media
… is produced in the Earth s crust as a result of alpha-decay of radium and is free to migrate through soil, either by molecular diffusion or by advection, and be released to the atmosphere where his behavior and distribution are mainly governed by meteorological processes. Advec-tion, in …