| 激光解吸电离飞行时间质谱计的谱峰定标 |
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| 引用本文： | 杨锋,郭等柱,张兆祥.激光解吸电离飞行时间质谱计的谱峰定标[J].真空电子技术,2011(1):1-4. |
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| 作者姓名： | 杨锋 郭等柱 张兆祥 |
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| 作者单位： | 北京大学,电子学系,北京,100871 |
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| 基金项目： | 国家自然科学基金(60971002); 科技部973计划项目(2006CB932402) |
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| 摘 要： | 研制了一套飞行时间质谱计（TOF）,能够同时或分别在电子碰撞电离（EBI）和激光解吸电离（LDI）两种机制下工作。利用EBI模式下得到的真空残气质谱图,对LDI模式下得到的TOF质谱峰进行了定标。通过在作为LDI靶材的金属基底表面添加碱金属卤化物的实验,证实了这种定标方法的可行性。
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| 关 键 词： | 激光解吸电离 飞行时间质谱计 谱峰定标 |
Calibration of Mass Peaks of Laser-Desorption-Ionization Time of Flight Mass Spectrometer |
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| YANG Feng,GUO Deng-zhu,ZHANG Zhao-xiang.Calibration of Mass Peaks of Laser-Desorption-Ionization Time of Flight Mass Spectrometer[J].Vacuum Electronics,2011(1):1-4. |
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| Authors: | YANG Feng GUO Deng-zhu ZHANG Zhao-xiang |
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| Institution: | YANG Feng,GUO Deng-zhu,ZHANG Zhao-xiang(Department of Electronics,Peking University,Beijing 100871,China) |
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| Abstract: | A time of flight(TOF) mass spectrometer has been developed,which can work both in electron bombardment ionization(EBI) mode and in laser desorption ionization(LDI) mode.The mass spectra of residual gases in vacuum obtained in EBI mode have been used to calibrate the mass peaks obtained in LDI mode.The feasibility of such a calibration method has been validated by experiments of adding alkali metal halides on metallic target. |
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| Keywords: | Laser desorption ionization Time of flight mass spectrometer Calibration of mass peaks |
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