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dc.contributor.advisorLunney, James
dc.contributor.authorTobin, Isaac
dc.date.accessioned2017-02-07T16:33:27Z
dc.date.available2017-02-07T16:33:27Z
dc.date.issued2014
dc.identifier.citationIsaac Tobin, 'Optical and EUV studies of laser triggered Z-pinch discharges', [thesis], Trinity College (Dublin, Ireland). School of Physics, 2014, pp 196
dc.identifier.urihttp://hdl.handle.net/2262/79231
dc.description.abstractThis thesis describes the results of experiments with two geometries of laser assisted discharge plasma. Both devices are designed for fast Z-pinch discharge, triggered by laser produced plasma generated by ablation of one or both electrodes. The laser plasma parameters are adjusted to control the plasma load while the discharge parameters are adjusted to yield a rate of rise of current greater than 1010 A/s. The expansion dynamics and emission characteristics of the plasma were analysed, with and without discharge. This was done using ion time-of-flight probes, temporally-and spatially-resolved optical emission spectroscopy, absolutely calibrated extreme ultraviolet (EUV) spectroscopy, in-band EUV energy output, intensified charge coupled device (ICCD) imaging of the EUV emitting region, and thin film deposition. The discharge current was monitored using a Rogowski coil, which gave a clear indication of pinch events. The experimental results are split into two main sections. In the first experiment a customisable miniature low-inductance discharge device was used to investigate the effect of triggering a discharge with colliding laser produced plasma. This colliding plasma interaction and the subsequent discharge were studied with various triggering conditions. In the second experiment a larger scale laser assisted discharge device was investigated as a source of extreme ultraviolet light with two materials as plasma load. These materials were tin and galinstan, the latter being a eutectic metal alloy of gallium, indium, and tin which is liquid at room temperature. The discharging of this device was triggered by the laser ablation of one of a pair of rotating disc electrodes, coated by liquid metal to avoid the issue of electrode erosion. The device was characterised as a possible short wavelength source for application in metrology.
dc.format1 volume
dc.language.isoen
dc.publisherTrinity College (Dublin, Ireland). School of Physics
dc.subjectPhysics, Ph.D.
dc.subjectPh.D. Trinity College Dublin
dc.titleOptical and EUV studies of laser triggered Z-pinch discharges
dc.typethesis
dc.type.supercollectionthesis_dissertations
dc.type.supercollectionrefereed_publications
dc.type.qualificationlevelDoctoral
dc.type.qualificationnameDoctor of Philosophy (Ph.D.)
dc.rights.ecaccessrightsopenAccess
dc.format.extentpaginationpp 196
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