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    • 5. 发明申请
    • X-ray spectrometer
    • X光谱仪
    • US20110188631A1
    • 2011-08-04
    • US12931255
    • 2011-01-26
    • Alexander Georgievich TuryanskyMikhail Alexandrovich NegodaevRoman Abramovich Khmelnitsky
    • Alexander Georgievich TuryanskyMikhail Alexandrovich NegodaevRoman Abramovich Khmelnitsky
    • G01T1/36
    • G01N23/2076G01N2223/0568G01N2223/1016G01N2223/5015
    • The invention relates to X-ray spectral analysis and can be used for control of radiation spectra of X-ray generators as well as for analysis of elemental chemical composition and atomic structure of the specimens by measuring their absorption spectra. The X-ray spectrometer comprises at least one dispersing prism element, means of translation of the dispersing element relative to an X-ray beam, a refracted radiation detector and measuring tools for angle positioning of the dispersing element and the refracted radiation detector. The main distinction of the claimed spectrometer is that it contains an additional radiation detector, means to install it downstream the radiation reflected from the refracting surface of the dispersing element and measuring tools for its angle position in relation to the primary X-ray beam. The dispersing element is made of diamond, or beryllium, lithium hydride or boron carbide. The claimed spectrometer scheme provides a multiple increase of spectral measurements accuracy within the energy range up to 100 keV and possibility of pulse spectra calibration.
    • 本发明涉及X射线光谱分析,可用于控制X射线发生器的辐射光谱,以及通过测量其吸收光谱分析样品的元素化学成分和原子结构。 X射线光谱仪包括至少一个分散棱镜元件,相对于X射线束平移分散元件的装置,折射辐射检测器和用于分散元件和折射辐射探测器角度定位的测量工具。 所要求保护的光谱仪的主要区别在于它包含附加的辐射探测器,用于将其安装在从分散元件的折射表面反射的辐射的下游,以及用于其相对于主X射线束的角度位置的测量工具。 分散元件由金刚石或铍,氢化锂或碳化硼制成。 所要求的光谱仪方案提供在高达100keV的能量范围内的光谱测量精度的多次增加和脉冲光谱校准的可能性。
    • 9. 发明授权
    • X-ray spectrometer
    • X光谱仪
    • US08675816B2
    • 2014-03-18
    • US12931255
    • 2011-01-26
    • Alexander Georgievich TuryanskyMikhail Alexandrovich NegodaevRoman Abramovich Khmelnitsky
    • Alexander Georgievich TuryanskyMikhail Alexandrovich NegodaevRoman Abramovich Khmelnitsky
    • G01T1/36G21K1/06
    • G01N23/2076G01N2223/0568G01N2223/1016G01N2223/5015
    • The invention relates to X-ray spectral analysis and can be used for control of radiation spectra of X-ray generators as well as for analysis of elemental chemical composition and atomic structure of the specimens by measuring their absorption spectra. The X-ray spectrometer comprises at least one dispersing prism element, means of translation of the dispersing element relative to an X-ray beam, a refracted radiation detector and measuring tools for angle positioning of the dispersing element and the refracted radiation detector. The main distinction of the claimed spectrometer is that it contains an additional radiation detector, means to install it downstream the radiation reflected from the refracting surface of the dispersing element and measuring tools for its angle position in relation to the primary X-ray beam. The dispersing element is made of diamond, or beryllium, lithium hydride or boron carbide. The claimed spectrometer scheme provides a multiple increase of spectral measurements accuracy within the energy range up to 100 keV and possibility of pulse spectra calibration.
    • 本发明涉及X射线光谱分析,可用于控制X射线发生器的辐射光谱,以及通过测量其吸收光谱分析样品的元素化学成分和原子结构。 X射线光谱仪包括至少一个分散棱镜元件,相对于X射线束平移分散元件的装置,折射辐射检测器和用于分散元件和折射辐射探测器角度定位的测量工具。 所要求保护的光谱仪的主要区别在于它包含附加的辐射探测器,用于将其安装在从分散元件的折射表面反射的辐射的下游,以及用于其相对于主X射线束的角度位置的测量工具。 分散元件由金刚石或铍,氢化锂或碳化硼制成。 所要求的光谱仪方案提供在高达100keV的能量范围内的光谱测量精度的多次增加和脉冲光谱校准的可能性。
    • 10. 发明授权
    • X-ray analysis apparatus with pulse amplitude shift correction and
detector reading circuit means suited for use in such an apparatus
    • 具有脉冲幅度偏移校正和检测器读取电路的X射线分析装置适用于这种装置
    • US5357551A
    • 1994-10-18
    • US48087
    • 1993-04-15
    • Hendrik J. J. BolkGeorges C. P. Zieltjens
    • Hendrik J. J. BolkGeorges C. P. Zieltjens
    • G01N23/00G01N23/207G01T1/36G01T1/40G01N23/223
    • G01N23/2076G01T1/40G01N2223/0568G01N2223/076G01N2223/304
    • In a gas ionization x-ray detector pulse-amplitude shifts will adversely affect the accuracy of the analysis. At increasing count rates a space charge building up leads to a decrease of the impact ionization in the detector thereby causing the detected pulse amplitude to become lower. By means of addressing a pulse-shift correction random-access memory with digital signals representing detected pulse amplitudes count rates pertaining to high-energy parts and low-energy parts, respectively of a peak in a pulse-height distribution are generated. A difference of count rates for a high-energy part and for a low-energy part of the same peak in the pulse-height distribution indicates pulse-amplitude shift. On the basis of the differences of the high-energy count rate and the low-energy count rate a correction signal is produced for adjusting the amplification of the pulse-amplitudes. To obtain stable operation pulse-shift correction is activated only when the count rate exceeds a threshold value.
    • 在气体电离X射线检测器中,脉冲幅度偏移将不利地影响分析的准确性。 在增加的计数率时,建立空间电荷导致检测器中的电离电离的降低,从而导致检测到的脉冲幅度变低。 通过寻址脉冲偏移校正随机存取存储器,分别产生表示检测到的脉冲幅度的数字信号,分别与脉冲高度分布中的峰值相关的高能量部分和低能量部分相关的计数率。 脉冲高度分布中的高能量部分和相同峰值的低能量部分的计数率的差异表示脉冲幅度偏移。 基于高能量计数率和低能量计数率的差异,产生用于调整脉冲幅度的放大的校正信号。 为了获得稳定的运行,只有当计数率超过阈值时才激活脉冲移位校正。