用LF-11激光装置的1.06 μm脉冲激光加热Cu靶产生的L-壳层线辐射作脉冲X射线源,在曝光量为(0.01～10)-7 J·cm-2范围内,标定了KODAK AA-5,KODAk SWR和UFSH-O软X射线胶片的响应曲线,并与用连续光源标定的进行了对比.结果表明,这三种ｘ射线胶片,在强脉冲光源曝光条件下,都存在着胶片响应互易律失效问题,过去用连续光源标定的响应曲线,在激光等离子体诊断实验中,已经不能采用.

By using the strong L-lines emitted from Cu plasma as pulse X-ray source produced by irradiating Cu target with a 1.06 μm pulse laser of the LF-11 laser facility,the reponses of X-ray film Kodak AA-5, Kodak SWR and UFSH-O were calibrated.Calibrated responses with the pulse X-ray source were compared with that with continuum X-ray source (fluoresent source exciteed by protons). These results showed the reciprocity failure. The response to continuum X-ray source is not suitable for the diagnostics in laser-induced plasma.