11 December 2012 Investigating the effects of laser intensity and pulse duration on 6.7-nm BEUV emission from Gadolinium plasma
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Proceedings Volume 8678, Short-Wavelength Imaging and Spectroscopy Sources; 86780C (2012) https://doi.org/10.1117/12.2015164
Event: Short-Wavelength Imaging and Spectroscopy, 2012, Bern, Switzerland
Abstract
In this work we present results on the influence of laser pulse duration and irradiating power density on the conversion efficiency (CE) and the ion energy of gadolinium (Gd) laser produced plasmas. Three lasers were used with 10 ns, 150 ps and 140 fs pulse durations. By varying the lasers output energies, experiments could be carried out for a power density range of 1011 - 1015 W/cm2. A maximum CE of 0.4% was achieved within a 0.6% bandwidth in 2π steradians using the picosecond laser. A faraday cup was used to calculate ion yield and time of flight measurements of each laser. The picosecond laser also showed a reduction in the ion time of flight measurements compared with the nanosecond pulse.
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Thomas Cummins, Thomas Cummins, Takamitsu Otsuka, Takamitsu Otsuka, Noboru Yugami, Noboru Yugami, Weihua Jiang, Weihua Jiang, Akira Endo, Akira Endo, Bowen Li, Bowen Li, Colm O'Gorman, Colm O'Gorman, Padraig Dunne, Padraig Dunne, Emma Sokell, Emma Sokell, Gerry O'Sullivan, Gerry O'Sullivan, Takeshi Higashiguchi, Takeshi Higashiguchi, } "Investigating the effects of laser intensity and pulse duration on 6.7-nm BEUV emission from Gadolinium plasma", Proc. SPIE 8678, Short-Wavelength Imaging and Spectroscopy Sources, 86780C (11 December 2012); doi: 10.1117/12.2015164; https://doi.org/10.1117/12.2015164
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