Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2015
Abstract With the announcement of the U.K. new nuclear build and the requirement to decommission ... more Abstract With the announcement of the U.K. new nuclear build and the requirement to decommission old facilities, researchers require bespoke facilities to undertake experiments to inform decision making. This paper describes development of The University of Manchester’s Dalton Cumbrian Facility, a custom built research environment which incorporates a 5 MV tandem ion accelerator as well as a self-shielded 60 Co irradiator. The ion accelerator allows the investigation into the radiolytic consequences of various charged particles, including protons, alpha particles and a variety of heavier (metal and nonmetal) ions, while the 60 Co irradiator allows the effects of gamma radiation to be studied. Some examples of work carried out at the facility are presented to demonstrate how this equipment can improve our mechanistic understanding of various aspects of the deleterious effects of radiation in the nuclear industry. These examples include applications in waste storage and reprocessing as well as geological storage and novel surveying techniques. The outlook for future research is also discussed.
Analysis of 3d printed plastics: PLA, ABS, Nylon, TPU, PC, CPE, CPE+. Irradiated in the 0.5-5.2 M... more Analysis of 3d printed plastics: PLA, ABS, Nylon, TPU, PC, CPE, CPE+. Irradiated in the 0.5-5.2 MeV region. Data from samples irradated at various dose levels Stress-strain plots FTIR spectroscopy Raman spectroscopy Chemical structures
This article describes the radiation facilities and associated sample preparation, management, an... more This article describes the radiation facilities and associated sample preparation, management, and analysis equipment currently in place at the Dalton Cumbrian Facility, a facility which opened in 2011 to support the UK’s nuclear industry. Examples of measurements performed using these facilities are presented to illustrate their versatility and the breadth of research they make possible. Results are presented from research which furthers our understanding of radiation damage to polymeric materials, radiolytic yield of gaseous products in situations relevant to nuclear materials, radiation chemistry in light water reactor cooling systems, material chemistry relevant to immobilization of nuclear waste, and radiation-induced corrosion of fuel cladding elements. Applications of radiation chemistry relevant to health care are also described. Research concerning the mechanisms of radioprotection by dietary carotenoids is reported. An ongoing open-labware project to develop a suite of mod...
Abstract We have assessed the formation and evolution of void and dislocation arrangements in Ta,... more Abstract We have assessed the formation and evolution of void and dislocation arrangements in Ta, Ta-5wt.%W and Ta-10wt.%W as a function of radiation level at a temperature of 345 ± 3 °C, by combining proton irradiation experiments, transmission electron microscopy and nano-hardness measurements. The damaged structure of tantalum at 0.1 dpa is characterized by the presence of a /2 〈111〉 interstitial dislocation loops and randomly distributed voids, whereas only dislocation loops are observed in the two alloys. Void ordering occurs in tantalum at 0.25 dpa, together with the appearance of dense dislocation tangles. A further increase in damage level leads to a continuous nucleation and growth of voids, and saturation is not attained at a damage level of 1.55 dpa. In contrast, the average size and number density of dislocation loops increases gradually with damage level in the two alloys, and voids only form at 1.55 dpa. Tungsten delays the loop evolution and therefore the formation of radiation-induced voids.
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2015
Abstract With the announcement of the U.K. new nuclear build and the requirement to decommission ... more Abstract With the announcement of the U.K. new nuclear build and the requirement to decommission old facilities, researchers require bespoke facilities to undertake experiments to inform decision making. This paper describes development of The University of Manchester’s Dalton Cumbrian Facility, a custom built research environment which incorporates a 5 MV tandem ion accelerator as well as a self-shielded 60 Co irradiator. The ion accelerator allows the investigation into the radiolytic consequences of various charged particles, including protons, alpha particles and a variety of heavier (metal and nonmetal) ions, while the 60 Co irradiator allows the effects of gamma radiation to be studied. Some examples of work carried out at the facility are presented to demonstrate how this equipment can improve our mechanistic understanding of various aspects of the deleterious effects of radiation in the nuclear industry. These examples include applications in waste storage and reprocessing as well as geological storage and novel surveying techniques. The outlook for future research is also discussed.
Analysis of 3d printed plastics: PLA, ABS, Nylon, TPU, PC, CPE, CPE+. Irradiated in the 0.5-5.2 M... more Analysis of 3d printed plastics: PLA, ABS, Nylon, TPU, PC, CPE, CPE+. Irradiated in the 0.5-5.2 MeV region. Data from samples irradated at various dose levels Stress-strain plots FTIR spectroscopy Raman spectroscopy Chemical structures
This article describes the radiation facilities and associated sample preparation, management, an... more This article describes the radiation facilities and associated sample preparation, management, and analysis equipment currently in place at the Dalton Cumbrian Facility, a facility which opened in 2011 to support the UK’s nuclear industry. Examples of measurements performed using these facilities are presented to illustrate their versatility and the breadth of research they make possible. Results are presented from research which furthers our understanding of radiation damage to polymeric materials, radiolytic yield of gaseous products in situations relevant to nuclear materials, radiation chemistry in light water reactor cooling systems, material chemistry relevant to immobilization of nuclear waste, and radiation-induced corrosion of fuel cladding elements. Applications of radiation chemistry relevant to health care are also described. Research concerning the mechanisms of radioprotection by dietary carotenoids is reported. An ongoing open-labware project to develop a suite of mod...
Abstract We have assessed the formation and evolution of void and dislocation arrangements in Ta,... more Abstract We have assessed the formation and evolution of void and dislocation arrangements in Ta, Ta-5wt.%W and Ta-10wt.%W as a function of radiation level at a temperature of 345 ± 3 °C, by combining proton irradiation experiments, transmission electron microscopy and nano-hardness measurements. The damaged structure of tantalum at 0.1 dpa is characterized by the presence of a /2 〈111〉 interstitial dislocation loops and randomly distributed voids, whereas only dislocation loops are observed in the two alloys. Void ordering occurs in tantalum at 0.25 dpa, together with the appearance of dense dislocation tangles. A further increase in damage level leads to a continuous nucleation and growth of voids, and saturation is not attained at a damage level of 1.55 dpa. In contrast, the average size and number density of dislocation loops increases gradually with damage level in the two alloys, and voids only form at 1.55 dpa. Tungsten delays the loop evolution and therefore the formation of radiation-induced voids.
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