2:00 PM - 2:15 PM
[SCG56-10] Development of low-cost simple dead time correction system for accurate quantitative electron probe microanalysis (EPMA) of trace element
Keywords:Electron probe microanalysis (EPMA), Dead time correction, X-ray spectrometry, Wavelength dispersive spectrometer (WDS), Proportional counter
To achieve long-time maintenance-free stable dead time correction in quantitative EPMA, a simple pseudo-fixed dead time system has been developed. The mono-stable multivibrator is inserted after single-channel analyzer (SCA) / pulse-height analyzer (PHA). The dead time of this design can be considered to be a fixed value when the count rate is bellow 200kcps. The relative error in this system is smaller than 0.5%.