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    • 15. 发明授权
    • Method for X-ray fluorescence spectroscopy
    • X射线荧光光谱法
    • US4510573A
    • 1985-04-09
    • US260984
    • 1981-05-06
    • William C. BoyceWarren D. WittekindLeroy C. HowardThomas E. HallWayne M. Lechelt
    • William C. BoyceWarren D. WittekindLeroy C. HowardThomas E. HallWayne M. Lechelt
    • G01N23/223G01V5/12G06F15/46G01N23/00
    • G01V5/12
    • A method and apparatus are described for performing X-ray fluorescence analysis where the physical relationship between the source/detector and the object being examined is not controlled. This technique and apparatus is particularly advantageous in performing an in situ analysis of the concentration of one or more elements present in a matrix of a material such as rock. In accordance with this aspect of our invention, such a mineral assay is performed by drilling a borehole into the matrix, inserting into the borehole a probe containing a suitable XRF source/detector, irradiating the matrix, detecting the spectrum of radiation that is produced and analyzing this spectrum. Preferably, the concentration of the assayed element is determined from the following formula: ##EQU1## where S is the number of photons counted having energies in a signal range where the X-ray spectral line of the assayed element is observed, C is the number of photons counted in a range where a radiation peak is observed, B is the number of photons counted in a background range, E is the number of photons counted in a range adjacent that where said radiation peak is observed, and K.sub.1 through K.sub.6 are empirically determined constants relating to the performance of the probe.
    • 描述了用于进行X射线荧光分析的方法和装置,其中源/检测器和被检查物体之间的物理关系不被控制。 这种技术和设备在对诸如岩石的材料的基质中存在的一种或多种元素的浓度进行原位分析是特别有利的。 根据本发明的这个方面,这种矿物测定是通过将​​钻孔钻入基质中,将含有适合的XRF源/检测器的探针插入钻孔中,照射基质,检测产生的辐射光谱, 分析这个频谱。 优选地,所测定的元素的浓度由下式确定:其中S是在观测到测定元素的X射线谱线的信号范围内具有能量的光子数,C是数目 在观察到辐射峰的范围内计数的光子,B是在背景范围内计数的光子数,E是在与观察到所述辐射峰的范围相邻的范围内计数的光子数,K1至K6是经验性的 确定与探头性能有关的常数。
    • 18. 发明授权
    • Tab receptacle terminal
    • 标签插座端子
    • US4423921A
    • 1984-01-03
    • US378574
    • 1982-05-17
    • Thomas E. Hall
    • Thomas E. Hall
    • H01R13/115H01R13/20H01R15/12
    • H01R13/115H01R13/20
    • An electrical tab receptacle terminal for mating with a complementary flat rectangular tab comprises a generally channel-shaped receptacle portion having a floor, two side walls upstanding from the floor, inturned flanges along the upper edges of the side walls, and an upwardly bowed deflectable tongue of generally trapezoidal shape integral with the floor at a juncture therewith which extends across the full width of the floor. The tongue has a centrally disposed detent on its upper surface and a free end offset slightly below the floor at the forward tab-entry end of the receptacle portion. Each of the inturned flanges has a downwardly embossed free end region extending through a major length thereof to form a lower narrow planar contact surface. The forward part of the receptacle portion is arranged and shaped to facilitate ready insertion of a tab between the tongue and the contact surfaces of the flanges.
    • 用于与互补的平坦矩形突出部配合的电接头插座端子包括大致通道形的插座部分,其具有地板,从地板垂直的两个侧壁,沿着侧壁的上边缘的内翻凸缘,以及向上弯曲的可偏转舌 大致梯形形状与其底部的地板一体地延伸穿过地板的整个宽度。 舌头在其上表面上具有居中设置的制动器,并且在接收器部分的前突片入口端处稍微偏置在地板下方的自由端。 每个内翻凸缘具有延伸穿过其主要长度的向下压花的自由端区域以形成下窄的平坦接触表面。 插座部分的前部被布置和成形以便于在舌片和凸缘的接触表面之间准备好插入片。