Metal nanoplasmas as bright sources of hard x-ray pulses
Plasma Physics
2009-11-07 v3 Atomic Physics
Abstract
We demonstrate a 13-fold increase in hard x-ray bremsstrahlung (10 - 200 keV) emitted by a copper plasma created by 100 fs, 806 nm pulses at Wcm. This enhancement is achieved by roughening the target surface with copper nanoparticles of ~15 nm size. A simple model that invokes local field modifications by surface plasmon excitation and `lightning rod' effects explains the observed enhancement quantitatively and provides pointers to the design of structured surfaces for maximizing the emission.
Keywords
Cite
@article{arxiv.physics/0204027,
title = {Metal nanoplasmas as bright sources of hard x-ray pulses},
author = {P. P. Rajeev and P. Taneja and P. Ayyub and A. S. Sandhu and G. R. Kumar},
journal= {arXiv preprint arXiv:physics/0204027},
year = {2009}
}
Comments
4pages, 4 figures, submitted to PRL