Dependence of hard x-ray yield on laser pulse parameters in the wavelength-cubed regime

Bixue Hou, J.E.; Nees, John A.; Theobald, Wolfgang; Mourou, Gébald A.; Chen, L.M.; Kieffer, Jean-Claude; Krol, Andrzej; Chamberlain, C.C.
March 2004
Applied Physics Letters;3/29/2004, Vol. 84 Issue 13, p2259
Academic Journal
Conversion efficiency and electron temperature scaling laws are experimentally studied in the wavelength-cubed (λ[sup 3]) regime, where a single-wavelength focus allows low energy pulses incident on a Mo target to produce x rays with excellent efficiency and improved spatial coherence. Focused intensity is varied from 2×10[sup 16] to 2×10[sup 18] W/cm[sup 2]. Conversion efficiency and electron temperature are best described by a power law for energy scaling while an exponential law best describes the scaling of these parameters with pulse duration. © 2004 American Institute of Physics.


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