Optimization and Analysis on Ion Mobility Spectrometer Based on a Laser Ionization Source

2011 ◽  
Author(s):  
Ren-dong Ji ◽  
Xiao-yan Wang
Keyword(s):  
Ion Mobility ◽  
Laser Ionization ◽  
Ionization Source ◽  
Ion Mobility Spectrometer

Design and experiment of a laser ionization source for ion mobility spectrometer

2006 ◽  
Vol 2 (5) ◽  
pp. 399-402 ◽  
Author(s):  
Ren-dong Ji ◽  
Xiang-he Kong ◽  
Xian-yun Liu ◽  
Shu-dong Zhang
Keyword(s):  
Ion Mobility ◽  
Laser Ionization ◽  
Ionization Source ◽  
Ion Mobility Spectrometer

Experimental research on benzene detection using ion mobility spectrometer with a laser ionization source

2006 ◽  
Vol 2 (4) ◽  
pp. 299-301 ◽  
Author(s):  
Xian-yun Liu ◽  
Xiang-he Kong ◽  
Ren-dong Ji ◽  
Shu-dong Zhang
Keyword(s):  
Experimental Research ◽  
Ion Mobility ◽  
Laser Ionization ◽  
Ionization Source ◽  
Ion Mobility Spectrometer

Measuring the effects of Coulomb repulsion via signal decay in an atmospheric pressure laser ionization ion mobility spectrometer

2018 ◽  
Vol 24 (4) ◽  
pp. 330-336 ◽  
Author(s):  
Marvin Ihlenborg ◽  
Ann-Kathrin Schuster ◽  
Jürgen Grotemeyer ◽  
Frank Gunzer
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Ion Mobility ◽  
Atmospheric Pressure ◽  
Coulomb Repulsion ◽  
Laser Ionization ◽  
Ion Mobility Spectrometer ◽  
Signal Decay ◽  
Ionization Sources ◽  
Reaction Region

Using lasers in ion mobility spectrometry offers a lot of advantages compared to standard ionization sources. Especially, the ion yield can be drastically increased. It can, however, reach levels where the Coulomb repulsion leads to unwanted side effects. Here, we investigate how the Coulomb repulsion can be detected apart from the typical signal broadening by measuring effects created already in the reaction region and comparing them with corresponding finite element method simulations.

Corona Discharge Ionization Source for a Planar High-Field Asymmetric Waveform Ion Mobility Spectrometer

2013 ◽  
Vol 46 (3) ◽  
pp. 452-460 ◽  
Author(s):  
Dongjie Zhao ◽  
Jian Jia ◽  
Jianping Li ◽  
Junjian Li ◽  
Xiaoguang Gao ◽  
...  
Keyword(s):  
Corona Discharge ◽  
Ion Mobility ◽  
High Field ◽  
Asymmetric Waveform ◽  
Ionization Source ◽  
Ion Mobility Spectrometer

scholarly journals Enhancement of Characteristics of Field Asymmetric Ion Mobility Spectrometer with Laser Ionization for Detection of Explosives in Vapor Phase

Chemosensors ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 91
Author(s):  
Vitalii A. Kostarev ◽  
Gennadii E. Kotkovskii ◽  
Alexander A. Chistyakov ◽  
Artem E. Akmalov
Keyword(s):  
Ion Mobility ◽  
Limit Of Detection ◽  
Signal To Noise Ratio ◽  
Beta Radiation ◽  
Laser Source ◽  
Portable Devices ◽  
Laser Ionization ◽  
Ionization Source ◽  
Cyclotrimethylene Trinitramine ◽  
Detection Of Explosives

Ion mobility spectrometry instrumentation today is widespread in the area of transport security and counterterrorism. This method of detection of explosive substances is highly appreciated for the existence of portable detectors capable of detecting concentrations of 10−13–10−14 g/cm3 at atmospheric pressure using traditional ionization methods including corona discharge and beta radiation. However, low vapor pressure of some explosives imposes requirements on limit of detection (LOD) down to 10–15‒10−16 g/cm3. In this paper we compare a radioactive 63Ni ionization source with a laser ionization source and reveal the parameters of laser ionization of a group of explosives, namely trinitrotoluene (TNT), cyclotrimethylene-trinitramine (RDX), cyclotetramethylene-tetranitramine (HMX) and pentaerythritol tetranitrate (PETN), which can reduce the limit of detection of portable devices. A laser ionization source can provide a higher signal to noise ratio than radioactive 63Ni at optimal intensity of laser radiation for PETN and HMX of 3 × 107 W/cm2 and 2.5 × 107 W/cm2, respectively. Limits of detection were estimated: 3 × 10−15 g/cm3 for RDX, 8 × 10−15 g/cm3 for PETN and less than 3 × 10−15 g/cm3 for HMX. These results are promising to further improve the capabilities of detectors of low volatility explosives without sacrificing portability, light weight and reasonable cost of the laser source.

A novel surface ionization source for ion mobility spectrometer

2007 ◽  
Vol 587 (1) ◽  
pp. 137-141 ◽  
Author(s):  
Guo Hui-yong ◽  
He Xiu-li ◽  
Gao Xiao-guang ◽  
Jia Jian ◽  
Li Jian-ping
Keyword(s):  
Ion Mobility ◽  
Surface Ionization ◽  
Ionization Source ◽  
Ion Mobility Spectrometer
Sign in / Sign up

Export Citation Format

Share Document