Target-heating effects on the Kα1,2-emission spectrum from solid targets heated by laser-generated hot electrons

Nilson, P. M.; Theobald, W.; Mileham, C.; Stoeckl, C.; Myatt, J. F.; Delettrez, J. A.; MacFarlane, J.; Begishev, I. A.; Zuegel, J. D.; Betti, R.; Sangster, T. C.; Meyerhofer, D. D.
April 2011
Physics of Plasmas;Apr2011, Vol. 18 Issue 4, p042702
Academic Journal
Target-heating effects on the Kα1,2-emission spectrum from small-mass Cu targets irradiated with 1-ps pulses focused to intensities >1018 W/cm2 have been observed. A collisional-radiative atomic physics model is unable to reproduce the time-integrated Kα1,2-emission spectrum from the smallest-mass targets when calculated with a single, time-independent thermal-electron temperature. When time-dependent heating to several hundred electron volts is included in the model, the synthetic spectra better reproduce the main observed spectral features.


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