試作四重極質量分析計の感度と分解能 Sensitivity and Resolution Studies using newly-developed Quadrupole Massfilter

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Abstract

Sensitivity and resolution were studied in a newly developed quadrupole massfiter. series of experiments was undertaken to discuss the factors which limit them. Sensitivity of0. 18mA/Torr mA at a resolution of56was obtained for N<SUB>2</SUB><SUP>+</SUP> ion with an emission current of1mA, when the ratio of transversed ions in the analyser to collimated was estimated to34%(resolution is defined as m/Δm, whereΔm is measured at half-height of the peak). The relative intensity through a mass range(69-605)was investigated. The resolution of1260was obtained at m/e=605with an ion energy of10eV. The maximum resolution has been found to depend on the ion energy. Reso lution has been found to depend on the ion energy. By the introduction of RF cycle numbers, relation was discussed and compared with von Zahn's approximation. The experi mental results suggested the dimensional accuracy was important. Mechanical alignments should be done with a great care. Particularly an angle and a displacement between ion source and quadrupoles were critical for high performance.

Journal

  • Journal of the Mass Spectrometry Society of Japan

    Journal of the Mass Spectrometry Society of Japan 23(4), 281-290, 1975

    The Mass Spectrometry Society of Japan

Codes

  • NII Article ID (NAID)
    130002034427
  • NII NACSIS-CAT ID (NCID)
    AN0010555X
  • Text Lang
    UNK
  • ISSN
    1340-8097
  • NDL Article ID
    1691264
  • NDL Source Classification
    PA24(化学実験・分析化学--光分析・電磁気分析)
  • NDL Source Classification
    ZP4(科学技術--化学・化学工業--分析化学) // ZM35(科学技術--物理学)
  • NDL Call No.
    Z17-213
  • Data Source
    NDL  J-STAGE 
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