Recent literature has reported impressive enhancements in hard-x-ray emission from short-lived solid plasmas by modulation of the interacting surface with nanostructures. We show that the modification of local electric fields near surface structures results in excessive absorption and enhanced x-ray production. A simple model based on local field variations explains the observed x-ray enhancements quantitatively.
© 2004 Optical Society of America
(240.5770) Optics at surfaces : Roughness
(240.6680) Optics at surfaces : Surface plasmons
(340.7480) X-ray optics : X-rays, soft x-rays, extreme ultraviolet (EUV)
(350.5400) Other areas of optics : Plasmas
P. P. Rajeev, P. Ayyub, S. Bagchi, and G. R. Kumar, "Nanostructures, local fields, and enhanced absorption in intense light-matter interaction," Opt. Lett. 29, 2662-2664 (2004)