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    • 31. 发明公开
    • METHOD AND APPARATUS FOR MATERIAL ANALYSIS.
    • VERFAHREN UND VORRICHTUNG ZUR MATERIALANALYSE。
    • EP0053620A4
    • 1982-10-07
    • EP81901515
    • 1981-06-10
    • COMMW SCIENT IND RES ORG
    • REID ALAN FORRESTZUIDERWIJK MARTIN ANTHONY MARI
    • G01N23/22G01N23/225H01J37/252G01N23/223
    • H01J37/244G01N23/22G01N23/2252G01N2223/053G01N2223/071G01N2223/079G01N2223/102G01N2223/402G01N2223/418G01N2223/605G01N2223/606H01J37/256H01J37/28H01J2237/2445H01J2237/24495
    • Method and apparatus for material analysis in which X-rays generated pursuant to incidence of an electron beam on the material are detected by a detector (24) which generates signals representative of X-ray intensity. A first single channel analyser (SCA-1) is connected to receive the signals from the detector (24) and to pass to an associated first counter (CTR-1) a count signal whenever the signal applied to the first single channel analyser is representative of an X-ray energy within a relatively narrow range of such energies. A second single channel analyser (BG-1) is also connected to receive the signals from the detector (24) and to pass to an associated second counter (B-1) a count signal whenever the signal applied to the second analyser (BG-1) is representative of an X-ray energy falling within a much broader range of such energies than the first-mentioned range. The first and second counters (CTR-1 and B-1) accumulate the count signals applied thereto. The count in the second counter (B-1) is compared by a comparator (C-1) with a pre-established count in a third counter (A-1) and when the count in the second counter (B-1) assumes the same value as the count in the third counter (A-1) the counts in the first and second counters (CTR-1 and B-1) are held. The so held count in the first counter (CTR-1) then itself represents a normalized ratio of X-ray energy within the narrow range to the X-ray energy for the energy spectrum represented by the broad range of energies. On the basis of this normalized ratio information as to the makeup of the material can be derived.
    • 用于材料分析的方法和设备,其中由产生表示X射线强度的信号的检测器(24)检测随材料上的电子束入射而产生的X射线。 第一单通道分析器(SCA-1)被连接以接收来自检测器(24)的信号,并且每当施加到第一单通道分析器的信号是代表性的时,就将计数信号传递给相关联的第一计数器(CTR-1) 在这样的能量的相对窄的范围内的X射线能量。 无论何时施加到第二分析器(BG-1)的信号都被连接以接收来自检测器(24)的信号并传递到相关的第二计数器(B-1) 1)代表的X射线能量落在比首先提到的范围更宽的能量范围内。 第一和第二计数器(CTR-1和B-1)累加施加于其上的计数信号。 第二计数器(B-1)中的计数由比较器(C-1)与第三计数器(A-1)中的预定计数进行比较,并且当第二计数器 与第三计数器(A-1)中的计数值相同的值保持第一和第二计数器(CTR-1和B-1)中的计数值。 在第一计数器(CTR-1)中这样保持的计数本身表示窄范围内的X射线能量与由宽范围能量表示的能量谱的X射线能量的归一化比率。 根据这个归一化的比率信息可以得出材料的组成。