The evolution of the transmission of extreme ultra-violet (EUV) light from a germanium backlighter through heated thin iron targets has been measured at laser irradiances of about 8><10 W cm-2. A rapid increase in transmission from 0 to 30% in 20 ps was observed. A two dimensional radiation hydrodynamics model was used to simulate the heating of the plasma and the transmission of EUV light as a function of time. The tamped iron targets were heated up to an average electron temperature of about 55 e V and a mass density of approximately 0.6 g cm-3. The transmission measurements are in reasonable agreement with modelling results. The experimental layout is similar to an X-ray laser experiment and therefore, for relatively low plasma temperatures, these kinds of experiments can be done in combination with X-ray laser experiments, giving transmission data for a range of wavelengths rather than a single X-ray laser wavelength.
|Title of host publication||Soft X-Ray Lasers and Applications VIII|
|Publication status||Published - 28 Sep 2009|
|Event||Soft X-Ray Lasers and Applications VIII - San Diego, United States|
Duration: 4 Aug 2009 → 6 Aug 2009
Conference number: 8
|Conference||Soft X-Ray Lasers and Applications VIII|
|Period||4/08/09 → 6/08/09|