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    題名: Simulation of the collisional cooling effect for binary and ternary buffer gas mixtures in a quadrupole ion trap mass spectrometer
    作者: Wu, Hui-fen;吳慧芬;Chen, Li-wei;Wang, Jhen-chen;Lin, Ya-ping
    貢獻者: 淡江大學化學學系
    關鍵詞: quadrupole ion trap mass spectrometer;collisional cooling effect;buffer gas mixturesp;simulation
    日期: 2001
    上傳時間: 2009-12-01
    出版者: IM Publications
    摘要: Simulation of the collisional cooling effect using binary and ternary buffer gas mixtures in the ion trap mass spectrometer was per-formed using the SIMION 6.0 program, in which a 3D collision model was used to describe the ion–buffer gas collisions. Computation of the ion kinetic energy based on the Langevin theory under various conditions was used to account for the effects of mixed buffer gases on ion-collisional cooling. The addition of small amounts (8–9%) of one or two heavier target gases (nitrogen, argon or SF 6) to the 1 mtorr helium buffer gas in the ion trap can greatly improve the collisional cooling effects. The kinetic energy of ions can be reduced to close to 0 eV. Although the use of ternary buffer gas mixtures can also effectively improve the collisional cooling effects, the use of binary buffer gas mixtures is the better choice due to convenience and lower cost in real ion trap applications.
    Simulation of the collisional cooling effect for binary and ternary buffer gas mixturesin a quadrupole ion trap mass spectrometer.
    關聯: European journal of mass spectrometry 7(1), pp.1-6
    DOI: 10.1255/ejms.374
    顯示於類別:[化學學系暨研究所] 期刊論文

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