为了提升X射线条纹相机阴极性能,提出了一种X射线条纹相机阴极的制作方法,采用此方法制作的阴极衬底薄膜使用聚碳酸酯作为原材料,厚度仅为300 nm,可较大程度降低对X射线的C吸收边效应,对提升阴极性能具有较大益处.利用北京同步辐射光源(BSRF)对制作的Au阴极和CsI阴极进行了绝对标定,给出了两种阴极在60~5500 eV能区范围内的绝对谱响应灵敏度,标定结果表明CsI阴极在60~5500 eV整个能区范围内都具有较高的谱响应灵敏度,即使在C吸收边位置谱响应灵敏度也只降低了约90%,表明阴极性能得到较大提升.

In order to improve performance of the X-ray streak camera cathode,we propose a new fabrication method of X-ray streak camera cathode,the benefit of this method is that the thickness of the substrate film using polycarbonate as raw material can be reduced to 300 nm.Thus the spectral response sensitivity of the cathode can be improved as the absorption to incident X-ray of the substrate film can be reduced.Absolute calibration of Au and CsI cathodes made by this method was carried out in Beijing Synchrotron Radiation Source (BSRF).Spectral response sensitivities of the two kinds of cathodes were obtained in the energy range of 60-5500 eV.Calibration results show that CsI cathode has a high spectral response sensitivity in the whole energy range of 60-5500 eV,and the spectral response sensitivity in carbon absorption edge is only about 9/10 lower.