等电子法测量小能量激光打靶等离子体电子温度

Electron temperature measurement of low-energy laser produced plasma using iso-electronic x-ray spectroscopy

以低Z的CHO薄膜作为样品靶 ,在星光激光装置上以小能量激光辐照样品靶产生温度较低的等离子体 ,采用每毫米 2 4 0 0线的平焦场光栅谱仪测量等离子体发射的碳和氧离子发射谱线强度比 ,并与理论计算相应线强比较 ,获得了电子温度 ,建立了等电子法测量较低温度 (10 0eV左右 )等离子体电子温度的诊断技术 .

Low-Z CHO targets were illuminated by a low-energy laser beam on Xingguang laser facility to produce relatively low-temperature plasma. The ratios of spectrum intensity of the carbon ions to the oxygen ions have been measured by a 2400 lines per millimeter grating spectrometer in order to obtain the electron temperature. The diagnostics on low electron temperature has been developed.