This title appears in the Scientific Report :
2003
Please use the identifier:
http://hdl.handle.net/2128/1575 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevE.68.056408 in citations.
Spatial characteristics of K alpha X-ray emission from relativistic femtosecond laser plasmas
Spatial characteristics of K alpha X-ray emission from relativistic femtosecond laser plasmas
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 explaine...
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Personal Name(s): | Reich, Ch. |
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Uschmann, I. / Ewald, F. / Düsterer, S. / Lübcke, A. / Schwoerer, H. / Sauerbrey, R. / Förster, E. / Gibbon, P. | |
Contributing Institute: |
Zentralinstitut für Angewandte Mathematik; ZAM |
Published in: | Physical Review E Physical review / E, 68 68 (2003 2003) 5 5, S. 056408 056408 |
Imprint: |
College Park, Md.
APS
2003
2003-11-21 2003-11-01 |
Physical Description: |
056408 |
DOI: |
10.1103/PhysRevE.68.056408 |
Document Type: |
Journal Article |
Research Program: |
Betrieb und Weiterentwicklung des Höchstleistungsrechners |
Series Title: |
Physical Review E
68 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevE.68.056408 in citations.
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. |