Pulse timing and optical interface between a neodymium: yttrium aluminum garnet laser and a Fourier transform ion cyclotron resonance mass spectrometer.
Pulse timing and optical interface between a neodymium: yttrium aluminum garnet laser and a Fourier transform ion cyclotron resonance mass spectrometer.
复制标题
钕：钇铝石榴石激光器和傅里叶变换离子回旋共振质谱仪之间的脉冲定时和光学接口。
DOI：
10.1002/rcm.1290050309
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
Marshall,AG
中科院分区：
文献类型：
--
作者：
Liang,Z;Ricca,TL;Marshall,AG
激光解吸/电离与脉冲(飞行时间或傅里叶变换离子回旋共振)质谱学检测相结合是分析非挥发性化合物和混合物的一种强有力的技术。这些实验最初是用脉冲二氧化碳激光器进行的。尽管脉冲CO2激光器可以在单次模式下工作，但在最终的Q开关输出光脉冲之前进行多次闪光预热的情况下性能最好，因此需要将所需的最终激光输出脉冲与用于质谱分析的事件序列同步。在本文中，我们描述了一个新的和简单的接口(包括光学和电子部件)之间的连续(原量子)型YG660a型Nd：YAG激光器和Extrel FTMS-2000型质谱仪。光学元件由Extrel先前的脉冲CO2激光接口改装而成。与之前公布的需要辅助微型计算机的唯一方法不同，通过使用廉价的脉冲装置的简单计时电路，并由Extrel 1280数据系统和单元控制器直接产生的脉冲触发，实现了Nd：YAG激光器和质谱计事件序列之间的同步。本界面方法具有很高的灵活性，并使涉及激光脉冲的复杂序列事件成为可能，例如：固体的解吸/电离；气体中性的光致电离；以及气体离子的光解离和光解离。
Laser desprption/ionization combined with pulsed (time‐of‐flight or Fourier transform ion cyclotron resonance) mass spectrometric detection is a powerful technique for analysis of involatile compounds and mixtures. Such experiments were originally conducted with pulsed CO2lasers. Although a pulsed CO2laser can be operated in single‐shot mode, Nd: YAG lasers perform best with multiple flashes for warm‐up before the final Q‐switch output light pulse, thus creating the need to synchronize the desired final laser‐output pulse with the event sequence for mass spectrometric analysis. In this paper, we describe a new and simple interface (both optical and electronic components) between a Continuum (formerly Quantel) Model YG 660A Nd: YAG laser and an Extrel FTMS‐2000 mass spectrometer. The optics are modified from a prior pulsed CO2laser interface from Extrel. Synchronization betweem th Nd: YAG laser and the mass spectrometer event sequence is achieved by means of a simple timing circuit that uses an inexpensive pulsing device and is triggered by pulses generated directly from the Extrel 1280 data system and cell controller, in contrast to the only prior published method that required an auxiliary microcomputer. The present interface method is highly flexible, and makes possible complex sequence events involving laser pulses for e.g.: desorption/ionization of solids; photoionization of gaseous neutrals; and photodissociation and photodetachment of gaseous ions.