| 摘要 |
An X-ray spectrometer capable of reducing the effects of noises is offered. The X-ray spectrometer (100) includes: an X-ray detector (110) for detecting X-rays and outputting a staircase waveform (S110); a first differential filter (120) for converting the staircase waveform (S110) into a first pulsed signal (S120); an event detection portion (140) for making a decision as to whether the first pulsed signal (S120) has exceeded a threshold value; a noise event detection portion (150) for making a decision as to whether a time for which the first pulsed signal (S 120) is in excess of the threshold value is shorter than a given time; a second differential filter (160) for converting the staircase waveform (S 110) into a second pulsed signal (S 160) having peaks whose heights correspond to the heights of the steps of the staircase waveform; a maximum value detection portion (170) for starting to detect a maximum value of the second pulsed signal (S 160) if the first pulsed signal (S120) is judged to have exceeded the threshold value; and a decision portion (180) for making a decision as to whether information about the maximum value is output, based on the decision made by the noise event detection portion (150). |
