AN OPTIMAL ROSS FILTER SYSTEM FOR SOFT X-RAY SPECTRA MEASUREMENT

A broadband Ross filter spectrometer is described for measuring soft X ray radiation (0.1～1 5keV) emitted from laser plasma. It consists of a number of channels, each representing a Ross filter pair in conjunction with Al cathode X ray diodes. An optimal channel has flat response within the sensitivity band, and minimal response outside it. The effect of some uncertainties on the accuracy of measurements is calculated.