Journal Article

PreJuSER-31495

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spatial characteristics of K alpha X-ray emission from relativistic femtosecond laser plasmas

Reich, C. ; Uschmann, I. ; Ewald, F. ; Düsterer, S. ; Lübcke, A.FZJ* ; Schwoerer, H. ; Sauerbrey, R. ; Förster, E. ; Gibbon, P.FZJ*

2003
APS College Park, Md.

This record in other databases:  

Please use a persistent id in citations: http://hdl.handle.net/2128/1575  doi:10.1103/PhysRevE.68.056408

Abstract: The spatial structure of the Kalpha emission from Ti targets irradiated with a high intensity femtosecond laser has been studied using a two-dimensional monochromatic imaging technique. For laser intensities I<5x10(17) W/cm(2), the observed spatial structure of the Kalpha emission can be explained by the scattering of the hot electrons inside the solid with the help of a hybrid particle-in-cell/Monte Carlo model. By contrast, at the maximum laser intensity I=7x10(18) W/cm(2) the half-width of the Kalpha emission was 70 mum compared to a laser-focus half-width of 3 mum. Moreover, the main Kalpha peak was surrounded by a halo of weak Kalpha emission with a diameter of 400 mum and the Kalpha intensity at the source center did not increase with increasing laser intensity. These three features point to the existence of strong self-induced fields, which redirect the hot electrons over the target surface.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

---

Contributing Institute(s):

1. Zentralinstitut für Angewandte Mathematik (ZAM)

Research Program(s):

1. Betrieb und Weiterentwicklung des Höchstleistungsrechners (I03)

Appears in the scientific report 2003

---

Database coverage:

---