Emission characteristics and dynamics of the stagnation layer in colliding laser produced plasmas

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dc.contributor.author Hough, Pádraig
dc.contributor.author McLoughlin, Conor
dc.contributor.author Harilal, Sivanandan S.
dc.contributor.author Mosnier, Jean-Paul
dc.contributor.author Costello, John T.
dc.date.accessioned 2012-04-17T08:56:19Z
dc.date.available 2012-04-17T08:56:19Z
dc.date.copyright 2010 American Institute of Physics en
dc.date.issued 2010-01-15
dc.identifier.citation Journal of Applied Physics en
dc.identifier.issn 0021-8979
dc.identifier.uri http://hdl.handle.net/10197/3565
dc.description.abstract The expansion dynamics of ion and neutral species in laterally colliding laser produced aluminium plasmas have been investigated using time and space resolved optical emission spectroscopy and spectrally and angularly resolved fast imaging. The emission results highlight a difference in neutral atom and ion distributions in the stagnation layer where, at a time delay of 80 ns, the neutral atoms are localised in the vicinity of the target surface (< 1 mm from the target surface) while singly and doubly charged ions lie predominantly at larger distances, < 1.5 mm and < 2 mm respectively. The imaging results show that the ions were found to form a well defined, but compressed, stagnation layer at the collision front between the two seed plasmas at early times (Δt < 80 ns). On the other hand the excited neutrals were observed to form a V shaped emission feature at the outer regions of the collision front with enhanced neutral emission in the less dense, cooler regions of the stagnation layer. en
dc.description.sponsorship Science Foundation Ireland en
dc.description.sponsorship Higher Education Authority en
dc.description.sponsorship Irish Research Council for Science, Engineering and Technology en
dc.format.extent 1257305 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher American Institute of Physics en
dc.rights The following article appeared in Journal of Applied Physics, 107, 024904 (2010) DOI: http://dx.doi.org/10.1063/1.3282683 and may be found at http://jap.aip.org/resource/1/japiau/v107/i2/p024904_s1. The article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. en
dc.subject Plasma en
dc.subject.lcsh Laser plasmas en
dc.subject.lcsh Collisions (Nuclear physics) en
dc.title Emission characteristics and dynamics of the stagnation layer in colliding laser produced plasmas en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.internal.webversions http://dx.doi.org/10.1063/1.3282683 en
dc.status Peer reviewed en
dc.identifier.volume 107 en
dc.identifier.issue 2 en
dc.identifier.startpage 024904 en
dc.identifier.doi 10.1063/1.3282683
dc.neeo.contributor Hough|Pádraig|aut| en
dc.neeo.contributor McLoughlin|Conor|aut| en
dc.neeo.contributor Harilal|Sivanandan S.|aut| en
dc.neeo.contributor Mosnier|Jean-Paul|aut| en
dc.neeo.contributor Costello|John T.|aut| en
dc.description.admin ab, li - TS 28.03.12 en

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