オーラルセッション
- 第2日 6月23日（木） 10:00～10:20 C会場（411，412）
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2C-O1-1000 PDF
多重飛行時間型質量分析計に搭載する誘導電荷検出器の開発
We propose an autocorrelation function to resolve an overtaking problem in multiturn time-of-flight mass spectrometer (TOF-MS). The function analyzes a characteristic period for one lap of each ion packet and derives a mass spectrum from a signal pulse train composed of multiturn ion packets. In order to detect the ion pulse train, a new nondestructive ion detector has been developed and installed into a multiturn orbit of MULTUM-S II. This detector is composed of electrostatic induced charge detector, preamplifier, and digitizer. Conventional ion detector of TOF-MS is worked after collection of the signal pulse train. We integrated the mass spectra collected by the nondestructive and conventional detectors to improve mass resolving power and mass accuracy. The integrated mass spectrum performed a mass resolving power of 29,000 for m/z 69 and mass accuracy of 20 ppm (RMS) for perfluorotributylamine gas sample.