Abstract:
PURPOSE: An ionization source securing device of a mass spectrometer using an UV diode and a micro channel plate is provided to reduce size and weight by supplying a required amount of electron beams when needed. CONSTITUTION: An UV diode(110) emits an ultraviolet ray to the inside of vacuum chamber of a mass spectrometer. A microchannel plate electron multiplication board(120) induces and amplifies the discharging of the initial electrons of UV photons and secures the bulk of electron beams at a rear plate. An electron integrating lens(130) integrates an amplified electronic beam. An ion trap mass spectrometer(140) ionizes gas sample molecules with an injected electron beam. An ion detector(150) detects an ion separated from the ion trap mass spectrometer with a mass spectrum. [Reference numerals] (AA) Detect signal
Abstract:
一種用於質譜計( mass spectrometer )之氣體分析方法及裝置,其包括:一離子泵,用於在該質譜計內產生內部真空;一離子室;一入口通道,氣體樣品經該通道導入離子室;閥裝置,其聯結該入口通道,用於控制導入離子室之氣體樣品容量;一絲狀陰極,其用於導引電子進入離子室,因而,電子撞擊氣體樣品而形成離子;一萃取板( extractor plate ),其定位在鄰接該離子室,且受偏壓而使得一部份離子及電子允許通過該萃取板;一四極過濾器,離子及電子受萃取板所導引進入該過濾器,四極過濾器作業而允許具有預選質量對電荷比之離子流通過過濾器,而不具有預選質量對電荷比之離子和該離子流分離;導引裝置,其用於在該四極過濾器區中導引電子朝向不具有預選質量對電荷比之離子方向,使得電子結合離子;一感測器,用於檢測通過四極過濾器之離子流;及分析裝置,其連接該感測器,用於分析該氣體樣品之成分。
Abstract in simplified Chinese:一种用于质谱计( mass spectrometer )之气体分析方法及设备,其包括:一离子泵,用于在该质谱计内产生内部真空;一离子室;一入口信道,气体样品经该信道导入离子室;阀设备,其联结该入口信道,用于控制导入离子室之气体样品容量;一丝状阴极,其用于导引电子进入离子室,因而,电子撞击气体样品而形成离子;一萃取板( extractor plate ),其定位在邻接该离子室,且受偏压而使得一部份离子及电子允许通过该萃取板;一四极过滤器,离子及电子受萃取板所导引进入该过滤器,四极过滤器作业而允许具有预选质量对电荷比之离子流通过过滤器,而不具有预选质量对电荷比之离子和该离子流分离;导引设备,其用于在该四极过滤器区中导引电子朝向不具有预选质量对电荷比之离子方向,使得电子结合离子;一传感器,用于检测通过四极过滤器之离子流;及分析设备,其连接该传感器,用于分析该气体样品之成分。
Abstract:
PROBLEM TO BE SOLVED: To provide an electron gun having a rotatable structure suitably used in an electron beam system. SOLUTION: This structure 200 is equipped with a first portion 400 having a generally circular cross section around a first rotation axis and including a first engagement end part and a first outer end part at its both ends, and a second portion 402 having a generally circular cross section around a second rotation axis and including a second engagement part and a second outer end part at its both ends. The first outer end part and the second end part include annular protrusions 302, 304 respectively. The first and second engagement parts have the substantially same inner diameters and the substantially same outer diameters, and include recessed parts 418, 420 formed at regular intervals along each of them. The first and second engagement end parts are joined so that the first and second rotation axes are aligned and the corresponding recessed parts 418, 420 of the first and second engagement end parts are aligned, and under this condition, each of openings 300 is formed so that the aligned recessed part receives an electron source. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To correctly analyze a plurality of molecular ingredients on real time based on the PI-method contained in the gas generated instantaneously by making the plurality of molecular ingredients mutually simultaneously ionization object by the PI (photo-ionization)-method. SOLUTION: The gas analyzer comprises: the gas carrier device 4 for carrying gas generated from the sample S in the sample chamber R0; ionization device 19 for ionizing the gas; the quadrupole filter 21 for separating ions for every mass to charge ratio; and the ion detection device 22 for detecting the separated ions. The ionization device 19 is composed of ionization regent provided at the vicinity of the gas discharge port of the gas carrier device 4 and the lamp 33A for irradiating the ionization regent with light. The lamp 33A irradiates the light of lower directivity than the laser beam, therefore the light propagates divergently. Consequently, The gas entered the ionization region of the ionization device 19 is irradiated with the light, and the plurality of gas ingredients in the area are simultaneously ionized. COPYRIGHT: (C)2007,JPO&INPIT