公开(公告)号：US06768108B2

公开(公告)日：2004-07-27

申请号：US10610809

申请日：2003-07-02

申请人： Yoshiki Hirano ,  Yoshiro Shiokawa ,  Toshihiro Fujii ,  Munetaka Nakata ,  Masao Takayanagi

发明人： Yoshiki Hirano ,  Yoshiro Shiokawa ,  Toshihiro Fujii ,  Munetaka Nakata ,  Masao Takayanagi

IPC分类号： H01J4900

CPC分类号： H01J49/105

摘要： An ion attachment mass spectrometry apparatus provided with a first chamber and a second chamber separated by a partition having an aperture (nozzle), an emitter, a mass spectrometer, a vacuum pump, and a sample gas introduction mechanism for introducing a sample gas and making metal ions attach to sample gas molecules to make the sample gas positive ions. Further, the Knudsen number of the aperture is made not more than 0.01, the pressure of the second chamber is not more than {fraction (1/10)}th of the first chamber, gas of the sample gas in the first chamber is blown out from the aperture to the second chamber, and a supersonic jet formed in the second chamber is provided. Sample gas and metal ions are injected into the supersonic jet region and metal ions are made to attach to the sample gas molecules.

摘要翻译： 一种离子附着质谱装置，其具有第一室和第二室，所述第一室和第二室由具有开口（喷嘴）的隔板分隔开，发射体，质谱仪，真空泵和样品气体引入机构，用于引入样品气体， 金属离子附着于样品气体分子，使样品气体正离子。 此外，孔径的克努森数不大于0.01，第二室的压力不大于{部分（第一室的1/10），第一室中的样品气体的气体从 提供了形成在第二室中的超音速射流，并且将样品气体和金属离子注入到超音速喷射区域中，并使金属离子附着到样品气体分子上。