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    • 3. 发明专利
    • Mass spectrometer
    • 质谱仪
    • JP2005079037A
    • 2005-03-24
    • JP2003310966
    • 2003-09-03
    • Shimadzu Corp株式会社島津製作所
    • YAMAGUCHI SHINICHIISHIHARA MORIOTOYODA MICHISATOOKUMURA DAISUKE
    • G01N27/62B01D59/44G01N27/64H01J49/00H01J49/40
    • H01J49/408H01J49/027
    • PROBLEM TO BE SOLVED: To improve mass accuracy of a mass spectrometer having a go-around track.
      SOLUTION: A detector 5 of an ion-nondestructive type is set on a go-around track A of ion, times of flight are measured for each round until the ion as an object for analysis goes around for N times, and time-of-flight spectra are made where a peak at each going around shows itself. Alternatively, a time of flight for each going around is measured according to detection signals by an ion-nondestructive detector 4 by changing the number of times of going around for each ion irradiation from an ion source for 1 to N rounds, and the time-of-flight spectra showing a peak at each round are made by combining it. A data processing unit 7 converts the spectrum data into a wavelength axis by Fourier transformation, and finds out peaks of frequencies corresponding to the number of mass to calculate the number of the mass from the frequencies.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提高具有复原轨迹的质谱仪的质量精度。 解决方案:将离子非破坏型的检测器5设置在离子的复原轨道A上,每个轮次测量飞行时间,直到作为分析对象的离子环绕N次,并且时间 在每个周围的峰值显示自身的情况下进行飞行光谱。 或者,根据通过离子无损检测器4的检测信号,通过将离子源的每次离子照射的次数改变为1〜N次来测量每个周围的飞行时间, 通过组合来显示每个轮次的峰值的飞行光谱。 数据处理单元7通过傅立叶变换将频谱数据转换为波长轴,并且找出与质量数相对应的频率的峰值,以从频率计算质量数。 版权所有(C)2005,JPO&NCIPI