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公开(公告)号:US4359639A
公开(公告)日:1982-11-16
申请号:US109309
申请日:1980-01-03
申请人: John S. Wykes , Piotr M. Surzyn , Gerard M. Croke , Ian Adsley
发明人: John S. Wykes , Piotr M. Surzyn , Gerard M. Croke , Ian Adsley
CPC分类号: G01N23/12
摘要: A coal/stone mixture transported on a conveyor is investigated by subjecting it to two radiation beams of differing energies. In a preferred embodiment, the higher energy radiation is collimated into a pencil beam and the lower energy radiation into a fan beam. Detector shielding prevents substantial interference of close-to-surface reactions within the detector deriving from the higher energy beam with detection of the lower energy beam.
摘要翻译: 通过对两个不同能量的辐射束进行研究,研究在输送机上运输的煤/石混合物。 在优选实施例中,较高能量辐射被准直成为笔形束,并将较低能量的辐射准直成风扇光束。 检测器屏蔽防止在较低能量束的检测中得到较高能量束的检测器内的近似表面反应的实质干扰。