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    • 22. 发明公开
    • Spectroscopic analyser for surface analysis, and method therefor
    • SpektroskopischeOberflächenanalysevorrichtungund Verfahren
    • EP1357578A2
    • 2003-10-29
    • EP03252540.4
    • 2003-04-23
    • THERMO ELECTRON CORPORATION
    • Bryan, Robert Barnard
    • H01J49/40
    • H01J49/40
    • A spectroscopic analyser and method of use, for surface analysis spectroscopy, are disclosed. The spectroscopic analyser 10 has a time-of-flight (TOF) spectrometer which analyses secondary electrons emitted from a surface of a sample 30 on excitation by an irradiation source 40. The TOF spectrometer includes a gate 50, which receives and selectively passes a proportion of the secondary electrons by pulsed deflection or retardation of the electron beam using gating members 55. In that manner one or more pulses of electrons enter a magnetic field-free flight tube 90 and reach a detector 120 downstream of the gate 50. The flight times, and therefore energies, of the detected electrons through the flight tube 90 are thereby detected. A curved electron mirror 100 may be used to increase the flight path of the pulsed electrons in the flight tube 90, thereby increasing the spread of each electron pulse within the analyser 10.
    • 公开了用于表面分析光谱的光谱分析仪和使用方法。 光谱分析仪10具有飞行时间(TOF)光谱仪,其分析由照射源40激发时从样品30的表面发射的二次电子。TOF光谱仪包括门50,其接收并选择性地通过比例 的二次电子通过脉冲偏转或使用选通构件55延迟电子束。以这种方式,一个或多个电子脉冲进入无磁场飞行管90并到达门50下游的检测器120.飞行时间 ,因此检测到通过飞行管90检测到的电子的能量。 可以使用弯曲电子反射镜100来增加飞行管90中的脉冲电子的飞行路径,从而增加分析器10内的每个电子脉冲的扩展。
    • 25. 发明公开
    • CARBON NANOTUBE ELECTRON IONIZATION SOURCES
    • 碳纳米管电子电离源
    • EP1683180A2
    • 2006-07-26
    • EP04810933.4
    • 2004-11-12
    • THERMO ELECTRON CORPORATION
    • TRAYNOR, Peter J.WRIGHT, Robert G.
    • H01J49/14
    • H01J49/147B82Y10/00B82Y30/00H01J2201/30434Y10S977/939
    • An ion source for use in a mass spectrometer includes an electron emitter assembly (30) configured to emit electron beams, wherein the electron emitter assembly comprises carbon nanotube bundles fixed to a substrate for emitting the electron beams, a first control grid configured to control emission of the electron beams, and a second control grid configured to control energies of the electron beams; an ionization chamber (34) having an electron-beam inlet (38) to allow the electron beams to enter the ionization chamber, a sample inlet for sample introduction, and an ion-beam outlet (29) to provide an exit for ionized sample molecules; an electron lens (31) disposed between the electron emitter assembly and the ionization chamber to focus the electron beams; and at least one electrode (37) disposed proximate the ion-beam outlet to focus the ionized sample molecules exiting the ionization chamber.
    • 用于质谱仪的离子源包括配置成发射电子束的电子发射器组件(30),其中电子发射器组件包括固定到衬底以发射电子束的碳纳米管束,第一控制栅格,配置成控制发射 以及配置成控制电子束的能量的第二控制栅格; 具有允许电子束进入电离室的电子束入口(38)的离子化室(34),用于样品引入的样品入口和离子束出口(29),以提供离子化样品分子的出口 ; 设置在电子发射器组件和电离室之间以聚焦电子束的电子透镜(31) 和靠近离子束出口设置的至少一个电极(37),以聚焦离开电离室的离子化样品分子。