Metal nanoplasmas as bright sources of hard x-ray pulses

Rajeev, P. P. ; Taneja, P. ; Ayyub, P. ; Sandhu, A. S. ; Kumar, G. Ravindra (2003) Metal nanoplasmas as bright sources of hard x-ray pulses Physical Review Letters, 90 (11). 115002_1-115002_4. ISSN 0031-9007

PDF - Publisher Version

Official URL:

Related URL:


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 ~1014-1015Wcm-2. 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.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:29682
Deposited On:23 Dec 2010 05:36
Last Modified:17 May 2016 12:29

Repository Staff Only: item control page