Hot ion generation from nanostructured surfaces under intense, femtosecond irradiation
Plasma Physics
2015-06-26 v1 Optics
Abstract
We present the effect of a nanostructured surface on the emission of ions and electrons from intense (5-36 Petwatt per sq.cm) femtosecond laser produced plasmas. Electrons from optically polished copper targets coated with copper nanoparticles (CuNP) are observed to be hotter than those from uncoated polished targets. A nearly two-fold enhancement is observed for ions in the range 14-74 keV, while ion yield decreases by a factor of 2 in the 74-2000 keV range. The total ion yields measured using a large area Faraday cup are more from CuNP targets than those from polished Cu targets, indicating increased ion beam divergence due to surface modulations.
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Cite
@article{arxiv.physics/0610126,
title = {Hot ion generation from nanostructured surfaces under intense, femtosecond irradiation},
author = {S. Bagchi and P. Prem Kiran and M. K. Bhuyan and S. Bose and P. Ayyub and M. Krishnamurthy and G. Ravindra Kumar},
journal= {arXiv preprint arXiv:physics/0610126},
year = {2015}
}
Comments
14 pages, 4 figures