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    • 72. 发明授权
    • Secondary ion mass spectrometer
    • 二次离子质谱仪
    • US4851673A
    • 1989-07-25
    • US228018
    • 1988-08-04
    • Eiichi IzumiHiroshi IwamotoEisuke MitaniHiroyasu Shichi
    • Eiichi IzumiHiroshi IwamotoEisuke MitaniHiroyasu Shichi
    • H01J37/244G01Q30/02H01J49/02H01J49/04H01J49/06H01J49/26
    • H01J49/02
    • A secondary ion mass spectrometer including primary ion emitting means for generating a primary ion to irradiate a specimen with the primary ion, means for separating secondary ions sputtered from the specimen, in accordance with mass-to-charge ratios, and detection means for detecting a secondary ion current emerging from the secondary ion separating means is disclosed, in which, when the value of the secondary ion current becomes greater than the upper limit of the dynamic range of the detecting means, the secondary ion current is attenuated by an attenuator, and the value of secondary ion current detected by the detection means is divided by the attenuation factor of the attenuator to obtain a corrected value. Thus, the secondary ion mass spectrometer is prevented from producing an erroneous analytical result due to the saturation of the detection means, that is, has a wide dynamic range, in which the amount of secondary ion varies by eight to ten orders of magnitude. Accordingly, the sescondary ion mass spectrometer can quantitatively determine a high-concentration element and a considerably-low-concentration element at the same time, and can determine the concentration distribution of an analytical element in a wide concentration range from a large value to a considerably small value.
    • 一种二次离子质谱仪,包括用于产生一次离子以用一次离子照射样本的初级离子发射装置,用于根据质荷比分离从样品溅射的二次离子的装置,以及检测装置 公开了从二次离子分离装置出现的二次离子电流,其中当二次离子电流的值变得大于检测装置的动态范围的上限时,二次离子电流被衰减器衰减,并且 由检测装置检测的二次离子电流的值除以衰减器的衰减因子以获得校正值。 因此,二次离子质谱仪由于检测装置饱和,即二次离子量变化八到十个数量级的宽动态范围而被防止产生错误的分析结果。 因此,该saysondary离子质谱仪可以同时定量地确定高浓度元素和相当低浓度的元素,并且可以确定从大值到相当大的浓度范围内的分析元素的浓度分布 价值小
    • 73. 发明授权
    • Ion source
    • 离子源
    • US4687938A
    • 1987-08-18
    • US808027
    • 1985-12-12
    • Hifumi TamuraHiroyasu Shichi
    • Hifumi TamuraHiroyasu Shichi
    • H01J27/26H01J37/08H01J37/26H01J27/00
    • H01J27/26H01J37/08
    • An ion source includes an ion source material holder adapted to load an ion source material thereon and having an aperture at the bottom thereof, an ion emitter mounted on the ion source material holder at the aperture, heating means for heating the ion source material holder and the ion emitter, and an ion extracting electrode for extracting an ion beam from the ion emitter. The ion emitter is made of a mixture of a material having a large work function and a material having a small work function, in order to be able to emit both positive ions and negative ions from the ion emitter. The polarity of a voltage applied between the ion emitter and the ion extracting electrode is changed so that one of the positive ion beam and the negative ion beam can be selectively extracted from the ion emitter.
    • 离子源包括离子源材料保持器,其适于在其上装载离子源材料并且在其底部具有孔,安装在孔处的离子源材料保持器上的离子发射器,用于加热离子源材料保持器的加热装置和 离子发射体和用于从离子发射器提取离子束的离子提取电极。 离子发射器由具有大功函数的材料和具有小功函数的材料的混合物制成,以便能够从离子发射器发射正离子和负离子。 改变施加在离子发射体和离子提取电极之间的电压的极性,使得能够从离子发射体中选择性地提取正离子束和负离子束中的一个。
    • 76. 发明授权
    • Method and apparatus for X-ray analyses
    • X射线分析的方法和装置
    • US5877498A
    • 1999-03-02
    • US893034
    • 1997-07-15
    • Aritoshi SugimotoYoshimi SudoTokuo KureKen NinomiyaKatsuhiro KurodaTakashi NishidaHideo TodokoroYasuhiro MitsuiHiroyasu Shichi
    • Aritoshi SugimotoYoshimi SudoTokuo KureKen NinomiyaKatsuhiro KurodaTakashi NishidaHideo TodokoroYasuhiro MitsuiHiroyasu Shichi
    • G01N23/225H01J37/256
    • G01N23/2252H01J2237/2445H01J2237/2807
    • An X-ray analyzing method for inspecting opening states of fine holes comprises the steps of: irradiating a finely converged electron beam into a first fine hole, observing an X-ray emitted from the inside of said first fine hole in order to obtain an first X-ray analysis data about the residue substance existing at the bottom of said first fine hole; irradiating a finely converged electron beam into a second fine hole, observing an X-ray emitted from the inside of said second fine hole in order to obtain an second X-ray analysis data about the residue substance existing at the bottom of said second fine hole; and comparing said first X-ray analysis data with said second X-ray analysis data, forming a judgment as to whether or not a difference between said first and second analysis data is smaller than a predetermined threshold value and using an outcome of said judgment to determine the opening states of said first and second fine holes. The X-ray observations are carried out by detecting only the X-rays emitted within the angular range -.theta. to +.theta. where notation .theta. is an angle formed with a center axis of the irradiated electron beam and so defined that tan .theta. is equal to a/d whereas notations a and d are the radius and the depth of the fine holes.
    • 用于检查细孔的打开状态的X射线分析方法包括以下步骤:将精细会聚的电子束照射到第一细孔中,观察从所述第一细孔的内部发射的X射线,以获得第一细孔 关于存在于所述第一细孔底部的残留物质的X射线分析数据; 将精细会聚的电子束照射到第二细孔中,观察从所述第二细孔的内部发射的X射线,以获得关于存在于所述第二细孔底部的残留物质的第二X射线分析数据 ; 以及将所述第一X射线分析数据与所述第二X射线分析数据进行比较,形成关于所述第一和第二分析数据之间的差是否小于预定阈值的判断,并且使用所述判断结果 确定所述第一和第二细孔的打开状态。 通过仅检测在角度范围θ至+θ内发射的X射线来进行X射线观察,其中符号θ是与照射的电子束的中心轴形成的角度,并且如此定义,tanθ等于 a / d,而符号a和d是细孔的半径和深度。