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 journalArticlepeer-review

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)
Pages (from-to)4
Number of pages1
JournalPhysical review letters
Volume90
Issue number11
DOIs
StatePublished - 2003
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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