Time-of-Flight Mass Spectrometry Using a Mid-Infrared Free-Electron Laser

Yasuhde Naito; Rie Sasaki; Manabu Heya; Kunio Awazu

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Time-of-Flight Mass Spectrometry Using a Mid-Infrared Free-Electron Laser

机译：使用中红外自由电子激光的飞行时间质谱

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A time-of-flight mass spectrometric apparatus was built for infrared matrix-assisted laser desorption/ionization (IR-MALDI) experiments using a free-ekectron laser (FEL). Preliminary experiments were carried out with a CO_2 laser at 9.5 muM and a FEL at 10.6 muM. These mid-IR wavelengths were shown to produce light atomic ions from solid samples. The detected ion peaks were broadened by the FEL macropulse with 15 mus width. Applying a delayed extraction pulse to FEL-generated ions brought about a small improvement on the mass resolution. By chopping a flux of ions at exit of the ion source region, the ion peak width became narrower by a factor of more than 10.

机译：建立了飞行时间质谱仪，用于使用自由电子激光（FEL）进行红外基质辅助激光解吸/电离（IR-MALDI）实验。初步实验是使用9.5μM的CO_2激光和10.6μM的FEL进行的。这些中红外波长显示出可以从固体样品中产生轻原子离子。所检测到的离子峰被15微米宽的FEL大脉冲加宽。对FEL产生的离子施加延迟的提取脉冲，对质量分辨率的改善很小。通过切断离子源区域出口处的离子通量，离子峰宽变窄超过10倍。

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来源
《Journal of the Mass Spectrometry Society of Japan》 |2003年第4期|p.458-465|共8页
作者
Yasuhde Naito; Rie Sasaki; Manabu Heya; Kunio Awazu;
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作者单位

Institute of Free Electron Laser, Graduate School of Engineering, Osak University (Tsuda-Yamate 2-9-5, Hirakata, Osaka 573-0128, Japan) Tel: +81-72-897-6413, FAX: +81-72-897-6411 E-mail: naito@fel.eng.osaka-u.ac.jp;

Institute of Free Electron Laser, Graduate School of Engineering, Osak University (Tsuda-Yamate 2-9-5, Hirakata, Osaka 573-0128, Japan);

Institute of Free Electron Laser, Graduate School of Engineering, Osak University (Tsuda-Yamate 2-9-5, Hirakata, Osaka 573-0128, Japan);

Institute of Free Electron Laser, Graduate School of Engineering, Osak University (Tsuda-Yamate 2-9-5, Hirakata, Osaka 573-0128, Japan);

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正文语种 eng
中图分类分析化学;
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机译：通过液相色谱 - 电喷雾 - 电喷雾高分辨率质谱和基质辅助激光解吸/电离飞行时间/飞行时间 - 飞行时间/飞行时间/飞行时间的飞行坯料中自由和细胞结合微囊藻蛋白和相关肽的综合策略使用阳性和负电离模式的质谱

Time-of-Flight Mass Spectrometry Using a Mid-Infrared Free-Electron Laser

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