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    • 5. 发明授权
    • Technique for obtaining sub-pixel spatial resolution and corrected
energy determination from room temperature solid state gamma and X-ray
detectors with segmented readout
    • 从具有分段读出的室温固态γ和X射线检测器获得亚像素空间分辨率和校正能量确定的技术
    • US06002741A
    • 1999-12-14
    • US992672
    • 1997-12-17
    • Yosef EisenAsher Shor
    • Yosef EisenAsher Shor
    • G01N23/08G01T1/24G01N23/04
    • G01N23/083G01T1/247
    • A method and apparatus for obtaining the planar location with sub-pixel resolution and corrected energy of a gamma or X-ray photon interacting with a room temperature solid state detector of given thickness. The detector comprises two electrodes of negative and positive polarities. One of the electrodes is common, and the other is segmented being formed with segmented readout elements. Each of the readout elements defines a pixel size. Depending on that the negative or positive electrode is segmented, respectively, negative-induces charge signals are induced on the readout elements or both a positive-induced charge signal is induced on a central readout element and negative-induced charge signals are induced on adjacent readout elements. Accordingly, respective induced-charge signals are simultaneously measured and statistically correlated on the respective readout elements with detector response templates so as to obtain a best fit template, thereby determining the photon's energy, location and depth of interaction.
    • 用于获得与具有给定厚度的室温固态检测器相互作用的伽马或X射线光子的子像素分辨率和校正能量的平面位置的方法和装置。 检测器包括负极性和正极性的两个电极。 电极中的一个是常见的,另一个是分段形成有分段读出元件。 每个读出元件定义像素尺寸。 取决于负电极或正电极被分段,在感应元件上感应出负电荷信号,或者两者都在中央读出元件上感应到正感应电荷信号,并在相邻读出器上感应到负感应电荷信号 元素。 因此,利用检测器响应模板在相应的读出元件上同时测量相应的感应电荷信号并统计地相关,以便获得最佳拟合模板,从而确定光子的能量,位置和相互作用深度。
    • 6. 发明授权
    • Method and system for obtaining x-ray single photon spectroscopic data
using room-temperature solid state detectors by measuring the induced
electron current
    • 通过测量感应电子电流,使用室温固态检测器获得x射线单光子光谱数据的方法和系统
    • US5936249A
    • 1999-08-10
    • US951510
    • 1997-10-16
    • Yosef EisenGideon EnglerAsher ShorEli Pollak
    • Yosef EisenGideon EnglerAsher ShorEli Pollak
    • G01T1/24
    • G01T1/247
    • A method and a system for obtaining spectroscopic data of a single photon of a given energy that undergoes an interaction, beginning at a given point in time, with a room-temperature solid state detector of a given thickness and fitted with two electrodes, which detection is held at a given bias by a voltage applied to the electrodes. In the course of the interaction, pairs of electrons and holes are created within the solid state detector which induce charge on the electrodes; the method and system enable for determination of a current induced by the electrons, being a measurable and quite accurate parameter for deducing spectroscopic data. The electron induced current is defined as the charge induced on the electrodes due to the electrons only, divided by the time it takes the electrons to induce this charge. The mentioned time is considered equal to that of a particular portion of a signal of the complete induced charge, and both the time and the charge are determined by the method and the system.
    • 一种用于获得给定能量的单个光子的光谱数据的方法和系统,该光子数据在给定时间点开始经历相互作用,具有给定厚度的室温固态检测器并且装配有两个电极,该检测 通过施加到电极的电压以给定的偏压保持。 在相互作用的过程中,在固态检测器内产生电子和空穴对,在电极上感应电荷; 该方法和系统能够确定由电子感应的电流,作为用于推导光谱数据的可测量和相当准确的参数。 电子感应电流被定义为仅由于电子而在电极上产生的电荷除以电子引起该电荷的时间。 所提到的时间被认为等于完全感应电荷的信号的特定部分的时间,并且时间和电荷都由方法和系统确定。
    • 7. 发明授权
    • Method and apparatus for the detection and imaging of heavy metals
    • 用于检测和成像重金属的方法和装置
    • US5060249A
    • 1991-10-22
    • US394016
    • 1989-08-15
    • Yosef EisenDrora KedemEmanuel Yellin
    • Yosef EisenDrora KedemEmanuel Yellin
    • G01V5/00
    • G01V5/0016
    • Method and apparatus for the fast inspection of objects for the detection of elementary or compounded metals of the kind that are capable of producing with impinging X-radiation within the range of 60-160 KeV a detectable photoelectric interaction. A 110-160 KeV X-ray source is used in association with collimating and filtering apparatus, capable of generating a collimated X-ray beam consisting of repeating cycles comprising each one energy bin having a flux centred around the K-edge energy of the target metal and, if desired, comprising additionl energy bins. There is also provided a linear array of solid state, spectroscopy grade detectors. Objects to be searched for these metals are scanned by moving them across the beam at a location intermediary between the X-ray source and the detector, at a speed so selected that during each of the predetermined pixels the full energy range of the said cycle impinges a full cross-section of an inspected object without any mutual dislocation between said X-ray source and linear array of solid state, spectroscopy grade detectors. For each pixel the intensity of transmitted radiation of selected bands is recorded and the ratios of the transmitted radiation in these bands is determined. The results are processed to an image of any detected article.