Abstract
X-ray harmonic radiation extending to 3.3 angstrom, 3.8 keV from Petawatt class laser-solid interactions is presented. The harmonic spectra display a relativistic limit scaling up to similar to 3000th order, above which an intensity dependent scaling roll-over is observed. Highly directional beamed emission for harmonic photon energy h nu > 1 keV is found to be into a cone angle <4 degrees, significantly less than that of the incident laser cone (20 degrees).
Original language | English |
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Pages (from-to) | 57-60 |
Number of pages | 3 |
Journal | European Physical Journal - Special Topics |
Volume | 175 |
Issue number | 1 |
DOIs | |
Publication status | Published - 14 Aug 2009 |
Keywords
- laser-pulse
- generation
- intensity