کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1866909 | 1038096 | 2014 | 4 صفحه PDF | دانلود رایگان |
• Low density high-Z mixture targets were proposed for significant x-ray emissions from laser-produced plasmas.
• The effects of low initial density are to decrease kinetic loss and to increase soft x-ray emissions.
• The main effect of high-Z mixture is to enhance x-ray emissions by coronal plasmas.
• The two effects can be added together due to simulations.
Enhancement of x-ray emissions from laser-produced plasmas is imperative for various applications. Low-density Au–Gd mixture was proposed to enhance the x-ray emissions. X-ray emissions were simulated for the laser-irradiated gold and Au–Gd mixtures with different initial densities. It was shown that 1.34 times conversion efficiency has been achieved for the 0.05 g/cm30.05 g/cm3 Au–Gd (6/4)(6/4) mixture comparing with the 10 g/cm310 g/cm3 gold. The enhancement is attributed to higher Rosseland mean opacities of the mixture and reduction of the ion kinetic energy caused by the lower initial density.
Journal: Physics Letters A - Volume 378, Issue 10, 14 February 2014, Pages 813–816