DEAD-TIME CORRECTION OF A MULTIELEMENT SSD FOR FLUORESCENT XAFS

The correct evaluation of the live time of a detection system is found to be important for correcting the counting loss of a multielement de tection system for fluorescent XAFS experiments. Synchronous resetting of preamplifiers and the suspension of electronics during the reset p eriod is an effective method. The dead time of the incoming count rate should also be corrected, since its non-linearity cannot be neglected . A 19-element solid-state detector system which can count up to 3.7 x 10(5) counts s(-1) channel(-1) with <270 eV FWHM for Mn K alpha has b een realized; the dead time was independent of the incoming photon ene rgy.