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强流脉冲离子束在靶上的能量密度分布是其研究和应用的一个重要参数。为了解决现有束流能量密度诊断方法的不足,利用红外成像仪测量靶背面的温度分布,从而建立了强流脉冲离子束能量密度分布的红外诊断方法。对能量密度1J/cm2量级、脉冲宽度为102 ns量级的束流,该方法测量误差好于5%,空间分辨率可达到1~2mm,具有操作简便、成本低的优点,是强脉冲能量沉积分布的一种高效迅速的诊断方法。
The energy density distribution of intense pulsed ion beam on the target is an important parameter of its research and application. In order to solve the shortcomings of current beam energy density diagnosis methods, the temperature distribution on the target backside is measured by infrared imager, and the infrared diagnostic method for the energy density distribution of the pulsed ion beam is established. For the beam with the energy density of 1J / cm2 and the pulse width of 102 ns, the method has the advantages of better than 5% measurement error and spatial resolution of 1 ~ 2mm. The method has the advantages of simple operation and low cost, and is characterized by strong pulse An efficient and rapid diagnostic method of energy deposition distribution.