发明名称 |
Methods and devices for laser desorption chemical ionization |
摘要 |
The subject invention pertains to a methods and devices for ionizing a sample material. The subject invention also relates to an ionization source and to a method of sampling gas-phase ions from a sample. An ionization source in accordance with the subject invention can be used in conjunction with mass spectrometry or other sampling techniques. The subject invention can utilize a means for desorbing gas-phase ions and neutral molecules from a sample and a means to generate reagent ions where the reagent ions ionize the desorbed neutral molecules so as to increase the population of gas-phase ions. The subject invention can incorporate laser radiation for desorbing gas-phase ions and neutral molecules from a sample. In a specific embodiment, the subject invention provides an ionization source that uses a pulsed laser for desorption, so as to produce a population of desorbed neutral molecules from a sample, as well as a number of gas-phase sample ions. In a further specific embodiment, the pulsed laser radiation can be adjusted such that neutral molecules are desorbed without the production of gas-phase sample ions by the laser radiation.
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申请公布号 |
US2004007673(A1) |
申请公布日期 |
2004.01.15 |
申请号 |
US20030448182 |
申请日期 |
2003.05.29 |
申请人 |
COON JOSHUA J.;HARRISON WILLARD W. |
发明人 |
COON JOSHUA J.;HARRISON WILLARD W. |
分类号 |
H01J49/04;H01J49/16;(IPC1-7):H01J27/00 |
主分类号 |
H01J49/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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