Metal Nanoplasmas as Bright Sources of Hard X-Ray Pulses

P. P. Rajeev, P. Taneja, P. Ayyub, A. S. Sandhu, G. Ravindra Kumar

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

We report significant enhancements in light coupling to intense-laser-created solid plasmas via surface plasmon and “lightning rod” effects. We demonstrate this in metal nanoparticle-coated solid targets irradiated with 100 fs, 806 nm laser pulses, focused to intensities [Formula presented]. Our experiments show a 13-fold enhancement in hard x-ray yield (10–200 keV) emitted by copper nanoparticle plasmas formed at the focal volume. A simple model explains the observed enhancement quantitatively and provides pointers to the design of structured surfaces for maximizing such emissions.

Original languageEnglish (US)
Number of pages1
JournalPhysical review letters
Volume90
Issue number11
DOIs
StatePublished - Jan 1 2003
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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