摘要
Hot dense titanium plasma was produced by irradiating a CH foam coated titanium layer with nanosecond laser pulses.The time-integrated emission spectra of He-like titanium were measured by using an absolutely calibrated flat crystal spectrometer.The synthetic spectra obtained by the steady collisional-radiative(CR)equilibrium model associated with the hydrodynamic simulations were compared with the experimental spectra.The results show that the electron density increases up to 5×10^(21) cm^(-3) with CH foam of density 40 mg/cc.This work indicates that an overlay of CH foam on a solid target is beneficial to create an optimum condition for K-shell emissions from a high density plasma region.
作者
赵阳
朱托
韦敏习
熊刚
宋天明
胡智民
黄成武
尚万里
杨国洪
张继彦
杨家敏
ZHAO Yang;ZHU Tuo;WEI Min-Xi;XIONG Gang;SONG Tian-Ming;HU Zhi-Min;HUANG Cheng-Wu;SHANG Wan-Li;YANG Guo-Hong;ZHANG Ji-Yan;YANG Jia-Min(Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang 621900)
基金
Supported by the Foundation of China Academy of Engineering Physics under Grant No 2011A0102005
the Foundation of Science and Technology on Plasma Physics Laboratory under Grant No 9140C680203110C6804.