An energy spectrometer for detecting flash X-ray spectra from 200 to 3000keV

The basic theory and experimental results obtained in measuring energy spectra of time- resolved high energy pulsed X-ray are reported. MCNP code was employed to calculate the energy deposition of high energy photons on the energy spectrometer. The waveforms of high energy pulsed X-ray created on the "Qiangguang-I" accelerator were measured by using the energy spectrometer. According to the deposited energy and integral data, the time-resolved high pulsed x-ray energy spectrum was obtained. By using the voltage and current waveforms of the diode, the energy spectrum was calculated in details. The results were agreed with that measured with the experimental energy spectrum.