公开(公告)号：US4520267A

公开(公告)日：1985-05-28

申请号：US301196

申请日：1981-09-11

Applicant: Heikki Sipila ,  Erkki Kiuru ,  Seppo Vaijarvi

Inventor： Heikki Sipila ,  Erkki Kiuru ,  Seppo Vaijarvi

IPC: B07C5/34 ,  G01N23/22 ,  G01N23/00

CPC classification number: G01N23/22 ,  G01N2223/05 ,  G01N2223/063 ,  G01N2223/071 ,  G01N2223/084 ,  G01N2223/206 ,  G01N2223/505

Abstract: Disclosed is a method and an apparatus for analyzing pieces of ore for the purpose of sorting. Each piece falling by the analyzer is irradiated individually by means of two gamma radiation sources operating at different energy levels so selected that, as to the scattering effect, at one level the Compton effect is predominant and at the other level the Compton effect and the photoelectric effect compete with each other. The former effect is strongly dependent on the ordinal number of the element and, thus, by detecting with at least one detector the scattering intensities produced with the said two sources of radiation and comparing the scattering intensities with each other, the proportion of heavy elements in the ore piece can be determined and the ore piece can be classified on the basis thereof. For example, one energy dispersively operating scintillation detector can be used for detecting the scattered radiation.

Abstract translation: 公开了一种用于分选矿石块的方法和装置。 由分析仪落下的每个片段通过以不同能级操作的两个伽马辐射源单独照射，所选择的散射效应在一个级别上，康普顿效应是主要的，而在另一个级别，康普顿效应和光电 效果相互竞争。 前者的作用很大程度上取决于元素的序数，因此通过用至少一个检测器检测所述两个辐射源产生的散射强度，并将散射强度彼此比较，重元素的比例 可以确定矿石块，并且可以基于其分类矿石块。 例如，可以使用一种能量分散操作的闪烁检测器来检测散射辐射。

公开(公告)号：US20050285018A1

公开(公告)日：2005-12-29

申请号：US10881420

申请日：2004-06-29

Applicant: Erkki Kiuru ,  Heikki Sipila

Inventor： Erkki Kiuru ,  Heikki Sipila

IPC: H01L31/00

CPC classification number: G01T1/247 ,  H04N5/32 ,  H04N5/357

Abstract: A drift detector produces an indication of an occurred hit of a quantum in the detector element. For neutralising accumulated charge in the detector element, indications of occurred hits are used to trigger pulses of deliberately increased neutralisation current into the drift detector for the duration of a limited time interval. Alternatively such triggering may be based on the operation of a timer.

Abstract translation: 漂移检测器产生在检测器元件中量子的发生命中的指示。 为了中和检测器元件中的累积电荷，发生的命中的指示用于在有限的时间间隔的持续时间内触发故障增加的到达漂移检测器的中和电流的脉冲。 或者，这种触发可以基于定时器的操作。

公开(公告)号：US20060086906A1

公开(公告)日：2006-04-27

申请号：US10971208

申请日：2004-10-22

Applicant: Erkki Kiuru

Inventor： Erkki Kiuru

IPC: G01T1/24

CPC classification number: H03F3/087 ,  H03F3/082

Abstract: For compensating for the rate dependent change of charge-to-voltage conversion factor in a drift-type radiation detector there is detected a change in a momentary photon hit rate affecting said drift-type radiation detector. A drain current flowing through an integrated amplifier of said drift-type radiation detector is changed by an amount proportional to the detected change in said momentary photon hit rate.

Abstract translation: 为了补偿漂移型辐射检测器中的电荷 - 电压转换因子的速率依赖性变化，检测到影响所述漂移型辐射检测器的瞬时光子命中率的变化。 流过所述漂移型放射线检测器的集成放大器的漏极电流被改变与检测到的所述瞬时光子命中率的变化成比例的量。